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【单选题】
作者是哪个国家的人?( ) A. 中国 B. 美国 C. 俄国 D. 英国A.
B.
C.
D.
D
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【简答题】引起毛细血管血压增高最常见的原因是____增高。引起血浆胶体渗透压下降最常见的原因是血浆____含量减少。
【简答题】A．They should watch the clock carefully. B．They should be careful of their handwriting. C．They should finish their assignment early. D．They should hand in their homework next week.
【简答题】A．They should be strict with their children B．They should not set limits for their children C．They should give more power to their children D．They should not be so anxious about their children