题目内容

To be ______ I couldn't understand what he was getting at. If you wanted to know you'd better ask someone else.

A. sly
B. humble
C. honest
D. cowardly

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血小板减少常见于

A. 霍奇金病
B. 弥散性血管内凝血
C. 类风湿关节炎
D. 胃溃疡
E. 血液病

The students take a () test in March, and the main exam is in July.

A. previous
B. preliminary
C. preceded
D. elementary

Agriculture must, therefore, ______ workers and savings to the new industrialized, urbanized sectors if a modern economy is to be achieved.

A. yield
B. succumb
C. subject
D. resort

病毒的致病因素:()

A. 内毒素
B. 外毒素
C. 荚膜
D. 以上都不是

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