-
Regarding maxillary canine, all is true except:
-
It is the longest tooth in dental arch.
-
Has 3 pulp horns.
-
Always found with one root canal.
-
Access cavity preparation is oval in shape.
-
Type II root canal system refers to:
-
1 canal, 1 Orifice, 1 Foramen.
-
2 canal, 2 Orifice, 2 Foramen.
-
2 canal, 2 Orifice, 1 Foramen.
-
2 canal, 1 Orifice, 2 Foramen.
-
Maxillary first premolars:
-
Most frequently have two roots
-
Access cavity preparation is triangular in shape
-
Have three pulp horns
-
Cross-sections at cervical line shows pulp chamber wider mesiodistally that buccolingually.
-
Root canal system in distal root of mandibular second molar is most frequently:
-
Type I
-
Type II
-
Type III
-
Type IV
-
Endodontic treatment is indicated in cases with:
-
Massive root resorption
-
Vertical root fracture
-
Large long standing radiolucencies
-
None of the above
-
Smallest tooth in the dental arch is:
-
Maxillary lateral incisor
-
Mandibular central Incisor
-
Mandibular lateral Incisor
-
Mandibular second premolar
-
2 canals are never found in:
-
Maxillary canine
-
Mandibular central incisor
-
Mandibular lateral Incisor
-
Mandibular first premolar
-
In mandibular molars, access cavity preparation is:
-
Within the confines of the mesial half of the crown
-
Could be triangular
-
Could be rhomboid
-
All of the above
-
Type I root canal system is most frequently found in:
-
Maxillary second premolar
-
Maxillary central incisor
-
Mandibular first premolar
-
Mandibular lateral Incisor
-
Flaring during access cavity preparation can be done with:
-
Round bur
-
Endo-Z bur
-
Fissure bur
-
b, c
-
First instrument to be used for coronal access cavity preparation is:
-
Endo-Z bur
-
Safe-ended stone
-
Round bur
-
a, b
-
Apex of the triangle-shaped access cavity preparation of incisors is:
-
Mesial
-
Distal
-
Incisal
-
Cervical
-
Access cavity preparation of all the following is oval or ovoid except:
-
Maxillary canine
-
Mandibular canine
-
Mandibular first molar
-
Maxillary second premolar
-
Bayonet curvature of the roots is common in:
-
Maxillary canine
-
Maxillary second premolar
-
Mandibular canine
-
Mandibular second premolar
-
Base of the triangle-shaped access cavity preparation of maxillary molars lies:
-
Mesially
-
Buccally
-
Distally
-
Palatally
-
Deroofing of the pulp chamber is important to:
-
Locate the canals
-
Decrease discoloration of the teeth
-
Facilitate accessibility to the canals
-
All of the above
17-The third phase of endodontic therapy is:
-
Diagnostic phase.
-
Obliteration phase.
-
Preparatory phase.
-
None of the above.
18-A case of vertical fracture has :
a)Moderate prognosis.
b)Hopless prognosis.
c)Good prognosis.
d)A good prognosis according to the age of the patient.
19-A large or long standing radiolucency:
a)Is contraindicated for endodontic treatment.
b)Might have poor prognosis.
c)Will usually heal after treatment.
d)None of the above.
20-A tooth with large rapidly growing radiolucency:
a)Is out of the scope of endodontic treatment.
b)Will usually heal after treatment.
C)Have poor prognosis.
d)None of the above.
21-Prognosis of endodontic treatment in elderly patients is better than young patient
Is due to:
a)Tighter apical foramina.
b)Lack of completely patent auxiliary root canals.
c)Dense periapical bone.
d)All of the above
-
Type IV root canal system refers to:
-
1 root canal, 1 orifice and 1 apical foramen.
-
1 root canal , 1 orifice and 2 apical foramina .
-
2 root canal, 2 orifice and 1 apical foramen.
-
2 root canal, 2 orifice and 2 apical foramina.
-
Cervical section of the root canal in a maxillary central incisor is:
-
Round.
-
Oval.
-
Triangular.
-
Ovoid.
-
The root canal system of maxillary canine is:
-
100 % type I.
-
100 % type III.
-
75 % type II.
-
85 % type I
-
The root canals in the mandibular incisors are:
-
Wider mesiodistally than labiolingually.
-
Wider labiolingually than mesiodistally.
-
Most frequently type III canal system.
-
None of the above.
-
The first mandibular premolar usually has:
-
One root with one root canal.
-
One root with two root canals.
-
Two roots with two canals that merge apically.
-
Two roots with two separate canals.
-
Which of the following burs is not recommended to use during deroofing of the pulp chamber:
-
Safe ended bur.
-
Round bur.
-
Inverted cone bur.
-
None of the above.
-
The outline of an access cavity in mandibular molars is:
-
Triangular in shape.
-
Square in shape.
-
Ovoid in shape.
-
None of the above.
-
In the first maxillary molar, the second mesiobuccal canal (MB2) is located:
-
In a palatal direction relative to MB1 canal.
-
In a mesiobuccal direction relative to MB1 canal.
-
In a mesiopalatal direction relative to MB1 canal.
-
In a distopalatal direction relative to MB1 canal.
-
The outline of the access cavity of maxillary premolars is:
-
Round.
-
Triangular.
-
Oval.
-
Rhomboid.
31- In a mesial view, the palatal root of the maxillary molars curves:
-
Buccally.
-
Distally.
-
Mesially.
-
Cervically.
32- A straight line access to the root canal ensures:
-
Conservation of tooth structure.
-
Unroofing of the pulp chamber.
-
Guiding the instrument tips.
-
None of the above.
33- Convenience form is a modification of the cavity to achieve:
-
Complete authority over the enlarging instrument.
-
Direct access to the apical foramen.
-
Unobstructed access to the canal orifices.
-
All of the above.
34-The outline of an access cavity in maxillary molars with four root canals is:
-
Triangular in shape.
-
Rhomboidal in shape.
-
Ovoid in shape.
-
None of the above.
35- Out line form of the access cavity in maxillary canine is :
a) Round
b) Trapezoid
c) Triangular
d) None of the above
36- Type III root canal sytem has:
-
One orifice ,one canal and two apical foramina
-
Two orifices, two canals and two apical foramina
-
One orifice ,one canal and one apical foramen
-
Two orifices, one canal and two apical foramina
37- - Maxillary lateral incisor has:
-
Type I root canal system
-
Type III root canal system
-
Type IV root canal system
-
All of the above
38- Endodontic treatment is contraindicated if :
-
There is Insufficient periodontal support
-
Non-strategic Tooth.
-
c -Massive Resorption.
-
d- All of the above
39- The part of the pulp tissue in the root is called :
-
Coronal pulp
-
Pulp horn
-
Radicular pulp
-
None of the above
40- Mandibular central Incisor may have:
-
Three canals
-
One canal
-
Two canals
-
b or c
41- The base of the triangle of the access cavity of maxillary central incisor lies:
-
Buccally
-
Incisally
-
Lingually
-
Distally
42-Factors affecting outline form of an endodontic access cavity :
-
Age of patient
-
Number of root canals
-
Size of pulp chamber
-
All of the above
43- Entrance in premolars is always gained through:
-
Buccal surface
-
Mesial surface
-
Occlusal surface
-
Distal surface
44- Out line form of the access cavity in mandibular premolars
-
Oval
-
Trapezoid
-
c-Triangular
-
None of the above
45- The second phase of endodontic therapy is called :
-
Diagnosis
-
Obliteration
-
Preparation
-
Restoration
46- Type IV root canal system has:
-
One orifice ,one canal and one apical foramen
-
Two orifices, one canal and two apical foramina
-
One orifice ,one canal and two apical foramina
-
Two orifices, two canals and two apical foramina
47- Maxillary canine has
-
One root with apical cuvature
-
Three roots
-
One pulp horn
-
a and c
-
None of the above
48- Endodontic access cavity outline in Maxillary molars is
-
Triangular
-
Round
-
Rhomboid
-
a or c
-
a or b
49- The fourth canal in maxillary first molar is found in:
-
Palatal root
-
Mesibuccal root
-
Distbuccal root
-
None of the above
50- Average length of mandibular canine is:
a) 18.5 mm
b) 25.2 mm
c) 32 mm
d) 20mm
51- Principles of endodontic access cavity preparation :
-
Outline form
-
Convenience form
-
Removal of carious dentine and defective resrorations
-
Irrigation of the cavity
-
All of the above
52- The only instrument of the following which is not used during access cavity preparation is:
-
Endo-Z bur
-
endodontic probe
-
File size 15
-
File size 40
53- Shape of the access cavity preparation of maxillary canine is:
a) Rhomboid
b) Oval
c)Triangular
d)Rectangular
54-Percentage of upper central incisors having two root canals:
-
5%
-
9%
c) 15%
d)hardly any.
55-Percentage of maxillary first premolars having two roots:
a)20%
b)40%
c)80%
d)hardly any
56-Mandibular first premolars most often have:
a)one root with 2 root canals
b)one root with 1 root canal
c)2 roots with 2 root canals
d)2 roots with 3 root canals
57-All the following cases are considered contraindication for endodontic treatment except:
a)Teeth with vertical root fracture.
b)Fractured two thirds of the crown.
c)Teeth with massive resorption
d)Teeth with sharp dilacerations.
58-Type IV root canal system refers to:
-
1 root canal , 1 orifice and 1 apical foramen .
-
1 root canal , 1 orifice and 2 apical foramina .
-
2 root canal , 2 orifice and 1 apical foramen .
-
2 root canal , 2 orifice and 2 apical foramina.
59-Cervical root section of upper central incisor is:
-
Round
-
Oval
-
triangular
-
ovoid
60-The longest tooth in the arch is:
-
Upper central incisor
-
Lower canine
-
Upper first molar
-
Upper canine
61-Mandibular incisors root canals are:
-
Wider mesiodistally than labiolingually
-
Wider labiolingually than mesiodistally
-
Most frequently type III canal system
-
None of the above
62-Which premolar has most frequently type I canal system
-
Upper 4
-
Lower 4
-
Upper 5
-
Lower 5
63-Cavity outline form in molars is located
-
in mesial half
-
in distal half
-
in the center of the tooth
-
shifted buccally
64-Maxillary canine contains
-
1 pulp horn
-
2 pulp horns
-
3 pulp horns
-
4 pulp horns
65-The access outline form of upper premolars is
-
round
-
triangular
-
oval
-
rhomboid
66-Indications of endodontic therapy include:
a) Insufficient periodontal support
b) Non-strategic tooth
c) Vertical fracture
d) Non of the above
67-Root canal system type III indicates :
-
Single root canal,single orifice,and single apical foramen
-
Two root canals,two orifices,and two apical foramina
-
Two canals,two orifices ,and one apical foramen
-
Single root canal,single orifice ,and two apical foramina
68-From the mesial view of maxillary central incisor we can see :
-
Wide pulp chamber with 3 pulp horns
-
Pulp chamber is pointed incisally and widen cervically
-
Triangular in shape with the base towards the labial and apex towards the palatal
-
b&c
69-Always the root canal system configuration is type I in :
-
Maxillary central incisor
-
Maxillary canine
-
All of the above
-
Non of the above
70-Cross section in the cervical third of maxillary canine is :
-
Oval
-
Triangular
-
Trapezoid
-
Rhomboid
71-Maxillary first premolar root canal configuration is 70% :
-
Type I
-
Type II
-
Type III
-
Type IV
72-Maxillary first molar may contain an extra canal called :
-
MB2
-
D2
-
P2
-
Non of the above
73-During access cavity preparation, straight line access is an objective to guarantee :
-
Improved obturation
-
Conservation of the tooth structure
-
Unroofing of the pulp chamber
-
b&c
74-Convenience form depends on :
-
Size of the pulp chamber
-
Shape of the pulp chamber
-
Number of root canals
-
Non of the above
75-Endo-Z bur is used in :
-
Penetration
-
Deroofing
-
Flaring
-
b&c
76-Under-extended preparation leads to:
-
Missed canal
-
Gouging
-
Perforation
-
All of the above
77-The outline form of maxillary molars is:
-
Oval
-
Round
-
Triangular
-
Non of the above
78-Reference point should be :
-
Easily visualized
-
Changed during operation
-
Usually the lowest point in the incisal edge of anteriors or cusp tip of posteriors
-
a&c
79-The coronal pulp is formed of :
a) Pulp chamber and root canal
b) Pulp chamber and pulp horns
c) Pulp chamber and accessory canals
d) Root canal and accessory canals
80-The basic phases of endodontic therapy(Tripod) include all of the following except :
-
Diagnostic
-
Preparatory
-
Irrigation of the cavity
-
Obliteration
81-When shooting maxillary first premolar from mesial side, root (a) is considered:
mesial
a
-
Palatal
-
Buccal
-
Mesial
-
Distal
82-Techniques of working length determination include the following,except :
-
Radiography
-
Tactile sensation
-
Electronic
-
Common average tooth length
83-Difference between radiographic apex and actual foramen is approximately :
-
1-3mm
-
6mm
-
4mm
-
Non of the above
84- Diagnostic materials and devices include:
a- Vitality testing.
b- Tooth slooth.
C -Radiography.
d. Visual aids.
e. All of the above.
85- Instruments for access cavity preparation include:
a- Burs.
b- Exploring instruments.
c -Barbed broach.
d. A & b.
e- None of the above.
86- Electric pulp testing is done to:
a- Determine whether pulp is normal or diseased.
b- Determine whether tooth is carious or not.
c- Differentiate between acute and chronic pulpits.
d- Differentiate between vital and non vital pulp.
87- Which of the following instruments is most likely to break during the root canal treatment :
a- Barbed broach.
b- K file.
c- K reamer.
d- Spreader.
88- All the following are exploring instruments except:
a -Endodontic explorer.
b- Smooth broach.
c- Apex locator.
d- Micro-opener.
89- Barbed broach is used for:
a-Exploring canals orifices.
b-Enlarging root canals.
c-Extirpating pulp tissue
d-Determination of the tooth length
90-K File is:
a-Fabricated by twisting counter clock wise.
b-Square in cross section.
c-Used in filing and reaming action.
d-All of the above.
91-Which of the following is not true for K Reamer:
a-Used for reaming only.
b-Used for filing and reaming.
c-Has triangular cross section.
d-Is fabricated by twisting counter clock wise.
92- H File is:
a- Fabricated by machining (grinding).
b- Used for filing only.
c- None of the above.
d-A & b
93- Flexibility is increased by:
a- Increasing the cross section.
b- Decreasing the length.
c- Increasing the length.
D -Increasing the number of flutes per millimeter.
94- The most flexible instruments are :
a - Nickel-titanium instruments.
b - Stainless steel instruments.
c- Carbon steel instruments.
d- A & c only.
95-According to ISO standardization the length of the cutting part is:
a - 0.02 mm.
b - 21 mm.
c – 0.32 mm.
d - 16 mm.
96-According to ISO standardization all the following is right except:
a- Taper is.02 mm/mm.
b- Tip design is 75+ or – 15 H degrees.
c- Linear increase in D1 by 0.05 mm from #15 to 60&0.1 mm from #.
d- D16=D1+ 0.21 mm.
97-Number 15 on the handle of file indicates that:
a-The increase in diameter from D1 to D16 is 0.15 mm.
b-The length from D1 to D16 is 15 mm.
c- Diameter at D1=0.15 mm.
d- The length from the working tip to the file handle is 15 mm.
98-Hybrid instruments means presence of modifications include:
a- The depth and the angle of the blades.
b-The material: carbon steel, St St, Ni Ti.
c- Method of manufacture.
d- Standardization.
e- All of the above.
99-Spreaders are used for:
a- Vertical condensation.
b- Lateral condensation.
c-Pulp extirpation.
d-Root canal preparation.
100-Satisfactory sterilization of endodontic instruments may be achieved by:
a- Autoclave with steam under pressure at 121 c for 20 minutes.
b- Dry heat at 160 c for one to one and half hours.
c-Both of the above are correct.
d-None of the above are correct.
101-In endodontic, sterilization methods used are:
a- Dry heat and autoclave.
b- Hot bead sterilizer and chemical sterilization.
c- Both A and B.
d-None of the above.
102-The rubber dam is used mainly to:
a-Prevent irrigating solution from entering the oral cavity.
b-Prevent salivary contamination of the root canal system.
c- Prevent the patient from aspirating files.
d-All of the above.
103-Headstrom-type files are more prone to separation because of:
a-The decreased cross-sectional diameter of equivalent-sized instruments.
b-Their design does not facilitate reaming.
c-A and B.
d-None of the above.
104-The main objectives of cleaning and shaping are:
a- Cleaning the root canal system from organic remnant.
b- Cleaning root canal system from inorganic irritants.
c- Shaping the root canal system to receive a three dimensional hermetic seal.
d-All of the above.
105-The root canal should be enlarged enough to:
a-Permit adequate debridement.
b-Manipulate and control of obturating materials.
c-Both A and B.
d-None of the above.
106-The first file used in apical preparation after straight line access is:
a- The initial file.
b-The master apical file.
c-The final file.
d-None of the above.
107-Biomechanical preparation of root canal is done :
a-In a wet environment with irrigants flooded in the canal.
b-In dry environment with no irrigants.
c-In dry or wet environment depending on the operators choice.
d-All of the above.
108-Biomechanical preparation of root canal ensures:
a-Creation of ledge.
b Debridement of root canal.
c-perforation of apical foramen.
d-None of the above.
109-Motion used in apical preparation is.
a-Reaming.
b-Filing.
c-Watch winding motion.
d-Balanced forced.
110-Motion used in coronal flaring:
a-Reaming.
b-Filing.
c-Watch winding.
d-Balanced force.
111-The instrument used in flaring is:
a- K reamer.
b- plugger
c- H file.
d- None of the above.
112- Flaring means:
a- Apical third preparation.
b- Apical stop creation.
c- Funneling the coronal two thirds.
d- Funneling the apical third.
113-Obturation techniques include the following:
-
Cold lateral compaction.
-
Warm vertical condensation.
-
Step back technique.
-
a & b.
114-Root canal that will be obturated with cold lateral compaction should be ;
-
Continuously tapered funnel shaped with apical matrix in sound dentin 0.5-1 mm short of radiographic apex.
-
Cylindrical with apical matrix in sound dentin 0.5-1mm short of radiographic apex.
-
Continuously tapered funnel shaped flushing with the radiographic apex.
-
Continuously tapered with open apex 0.5-1mm short of the radiographic apex.
115-These instruments and materials are used in obturation except :
-
Lentulo spiral .
-
Spreaders.
-
Tooth slooth.
-
Heat carrier
116-Master cone should fulfill the following except:
-
reach full working length.
-
Fit tightly in canal from orifice to apex.
-
Resist removal (tug back).
-
Resist moving beyond the apex.
117-If the master cone selected is tested and found to be passing beyond the apex by 2mm ,we can solve this problem by:
-
Withdrawal of the cone 2 mm.
-
Use larger cone not necessarily reaching the working length.
-
Cut off 1-2 mm from the tip of the cone and remark the working length.
-
None of the above.
118-If the selected master cone is tested and found to be shorter than the working length,this may be due to:
-
Debris packed in the apical portion.
-
Presence of a ledge shorter than the working length.
-
The working length was not measured from the selected reference point.
-
All of the above.
119-Radiograph shows the master cone extended beyond the working length, but the visual and tactile tests were correct. what is the cause of the problem?
-
Gatta percha is small.
-
Spreader is large.
-
Apical stop is violated.
-
Incorrect working length determination.
120-Spreader used in cold lateral compaction should fulfill the following criteria except:
a) Reach full working length when the canal is empty.
b) Reach 2mm short along side of the master cone.
c) Should be smaller in size than #25.
d) Spreader applies lateral force on the gutta percha.
121--The requirements of the ideal root canal sealer are :
-
easily manipulated .
b)adhesive to both gutta percha and dentin.
c)Should be of thick consistency upon mixing.
d)a & b .
e)b & c .
122-Good obturation should fulfill the following criteria upon radiographic evaluation :
-
Extend to prepared length .
-
Have uniform density from coronal to apical aspect .
-
Have close adabtation to canal walls.
-
All of the above.
123- Master cone selection is based on :
-
Initial file size .
-
Master apical file size .
-
Spreader size .
-
Accessory cone size.
124-Ideal master cone should be :
-
Fit only in the apical 1-2mm of the canal.
-
Binding along the canal.
-
One size larger than the initial file .
-
None of the above .
125- Sealer may placed by any of the following except:
-
Lentulo spiral
-
Condenser
-
Master cone
-
Paper point.
126-The proper root canal sealer consistency may be verified by :
-
String test.
-
Rubber dam test.
-
Test drop.
-
a & c .
127-Accessory cones should be :
-
Same size as the master cone .
-
One size larger than the selected spreader .
-
Same size of the master apical file .
-
One size smaller than the selected spreader.
128-The following materials are can be used as irrigants except :
-
Chlorhexidin
-
H2O2
-
NaOCl
-
Zinc Oxide Eugenol
129-The apical 1-2 mm of the canal is enlarged by :
-
filing motion
-
Reaming motion
-
In and out motion
-
Watch winding motion
130- underfilling may be due to
a) over instrumentation beyond the apical constriction.
b) lack of canal patency and insufficient taper
c) use of exssecive amount of force.
d) a & c
131- the following are needed for lateral compaction method except:
a) sealer
b) gutta-percha points
c) spreaders
d) pluggers
132- Instrumentation well short from the working length of canal results in:
a-Enlarging the apical foramen.
b-Incomplete preparation of the root canal.
c-Ledging the canal.
d- Traumatizing the apical tissue.
133- The fracture of root canal instrument may be caused by:
a- Incorrect access to the root canal.
b- Too vigorous instrumentation.
c- Using a too large sized reamer.
d- Using twisted or rusted or damaged instruments.
e- All of the above are correct.
134- Sodium hypochlorite solution is good for irrigation of root canal because:
a- It acts as bactericidal.
b- It acts as solvent for pulp tissue and debris.
c- It acts as lubricant for instruments within canals. d - It bleaches teeth.
e- All of the above are correct.
135- Obturation of canal system aims to:
a- Three dimensionally seal the root canal system (laterally, apical and cervical).
b- Two dimensionally seal the root canal system apical and cervical.
c- Apical seal the root canal system.
d- None of the above.
136- Prepared canal that will be obturated with lateral cold compaction should be:
a- severely curved canal.
b- Internally resorped canal.
c- Continuously tapered funnel shape with an apical matrix.
d. All of the above.
137- Cold lateral compaction technique include the following steps except:
a- Master cone and spreader selection.
b- Mixing of sealer and sealer placement.
c- Master cone placement, compaction and placement of accessory cones.
d- Flaring of the coronal two third.
e- Removing excess gutta-percha and management of pulp chamber.
138- Ideally master cone should:
a-Reach the full working length.
b-Fit only in the apical 1-2 mm of the canal.
c-Slightly resist removal on withdrawal from the canal space (tug back action).
d.Resist moving beyond the apex.
e- All of the above are correct.
139--The master gutta-percha cone must fill the canal tightly in the:
a-Apical third.
b-Middle third.
c-Occlusal third.
d-None of the above.
140- Ideal root canal filling material should be:
a-Easily introduced into the canal.
b-Semisolid.
c-Dimensionally stable.
d-All of the above.
141- The disadvantage of gutta-percha used as filling material is:
a- Poor biocompatibility.
b-Difficulty in preparing post space.
c.Lack of rigidity in smaller size.
d.Solubility in organic solvent.
142--The term "tug back" is related to:
a-Condensation of the gutta-percha.
b-Fit of the master cone in the apical third.
c-Length of the cone.
d-Tensile strength of gutta-percha.
e-Width of the cone.
143- The root filling material should reach:
a-Beyond the radiographic apex.
b-The dentinocemental junction.
c-To the radiographic apex.
d-None of the above.
Good Luck
1- b 2- c 3- a 4- a
5- c 6- b 7- a 8- d
9-b 10-d 11-c 12-d
13-c 14-b 15-b 16-d
17-b 18-b 19-c 20-b
21-d 22-b 23-c 24- a
25-b 26-a 27-c 28 -a
29-c 30-c 31-a 32-c
33-d 34-b 36-d 36-b
37-a 38-d 39-c 40-b
41-b 42-d 43-c 44-a
45-c 46-c 47-a 48-a
49-b 50-b 51-e 52-d
53-b 54-d 55-c 56-b
57-b 58-b 59-c 60-d
61-b 62-d 63-a 64-a
65-c 66-d 67-b 68-a
69-c 70-a 71-c 72-a
73-a 74-d 75-d 76-a
77-c 78-a 79-b 80-c
81-a 82-d 83-a 84-e
85-d 86-d 87-a 88-c
89-c 90-d 91-b 92-d
93-c 94-a 95-d 96-d
97-c 98-e 99-b 100-c
101-c 102-d 103-c 104-d
105-c 106-a 107-a 108-b
109-a 110-b 111-c 112-c
113-d 114-a 115-c 116-b
117-c 118-d 119-d 120-c
121-d 122-d 123-b 124-a
125-b 126-a 127-d 128-d
129-b 130-b 131-d 132-c
133-e 134-e 135-a 136-c
137-d 138-e 139-a 140-d
141-c 142-b 143-b |