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