______ difficulties should be taken into account.
A. Some these
B. All such
C. These all
D. Such all
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The rising crime rate is ______ major concern of ______ society.
A. the, the
B. a, /
C. a, the
D. /, the
Which of the italicized parts functions as an object
A. He doesn"t like the ideaof my speaking at the meeting.
B. It is no useyour pretending not to know the matter.
C. Herfalling into the riverwas the climax of the whole trip.
D. My parents strongly object tomy going out alone at night.
被覆黏膜不包括
A. 唇黏膜
B. 颊黏膜
C. 口底黏膜
D. 舌腹黏膜
E. 舌背黏膜
引起牙髓炎最罕见的病因是
A. 细菌感染
B. 金属充填物未加隔热衬里
C. 化学药物酚
D. 牙周炎
E. 咬合创伤
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