低体重常见原因（）。
A.喂养不当
B.摄食过少
C.调食偏食
D.神经心理压抑
E.蛋白质摄入不足
参考答案：A, B, C, D, E
Mother bought many tomatoes from the market two days ago, ____ some have gone bad due
to the bad weather. [ ]
A. of those
B. from which
C. of which
D. in which
害虫的生态对策
