In which point some sharks are similar with humans
A. Bone structure.
B. Smell ability.
C. Birth mode.
D. Recover ability against diseas
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This was the worst violence
A. in the U. S. S. R. since August 1991
B. in the country since 1991
C. in the city since the disintegration of the Soviet Union in August 1991
D. in the city since 1991
The people of Quebec vote on Monday on ______.
A. whether the province will speak English
B. whether the province will join the pre - independence campaign
C. whether the province will become independent
D. whether the province will speak French
Professor James used student volunteers as ______ for his experiment.
A. models
B. cases
C. agents
D. subjects
下列为膜剂成膜材料的是
A. 聚乙烯醇
B. 聚乙二醇
C. 交联聚维酮
D. 微晶纤维素
E. Poloxamer
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