Living in the central Australian desert has its problems, () obtaining water is not the least.
A. of which
B. for what
C. as
D. whose
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She is a bad roommate because she（）things about and makes a mess of theroom.
A. has always been left
B. is always leaving
C. has always left
D. has always been leaving
The warmth of（）sweater will of course be determined by the sort of（）wool used.
A. the; the
B. the; 不填
C. 不填; the
D. 不填;不填
It was surprising to see so high a bridge over（）
A. a so small river
B. so small a river
C. a such small river
D. such small a river
胰岛素治疗过程中，最常见的严重副作用是
A. 低血糖反应
B. 局部脂肪萎缩
C. 视力改变
D. 轻度水肿
E. 骨质疏松
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