They were surprised that a child should work out the problem they themselves could not.
A. once
B. unless
C. while
D. if
They were surprised that a child should work out the problem they themselves could not.A.
答案:2 悬赏:20 手机版
解决时间 2021-01-03 17:48
- 提问者网友：箛茗
- 2021-01-02 22:21
最佳答案
- 五星知识达人网友：一把行者刀
- 2021-01-02 23:46
A. onceB. unless(答案→)C. whileD. if解析：考查连词辨析。A一旦；B除非，如果…不…:C当…时；然而；尽管；D如果；句意：他们很惊讶地发现那个男孩能算出那道题，然而他们自己去不行。本句的while表示轻微的转折，故C正确。
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- 1楼网友：青尢
- 2021-01-02 23:52
我好好复习下
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