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问题 多项选择题

儿科学的范畴包括（）

A.研究儿童生长规律

B.研究儿童发育和行为

C.提高儿童疾病防治质量

D.研究儿童对人类社会的影响

E.提高儿童身心健康水平

答案

参考答案：A, B, C, E

选择题

—Angela, you are going to buy a flat here, are you?

—Yes, but I can't _________ an expensive one. [ ]

A. spend

B. cost

C. pay

D. afford

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选择题

Bad habits are no way easy to be ______; it needs your determination and perseverance.

A．replaced

B．moved

C．removed

D．got rid
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