【单选题】【消耗次数：1】
When he bent down to tie his shoelace, the belt of his trousers _____.
①
ruined
②
cracked
③
broke
④
split
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相关题目
【单选题】
The reason _____ he was late for the meeting is _____ his car broke down on the road.
①
why; that
②
why; because
③
that; that
④
for which; because
【单选题】
The reason __he was absent from the meeting was _his car broke down on the way.
①
that; because
②
why; that
③
that; that
④
for; that
【单选题】
He was _____ his late twenties when he found his first job.
①
in
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after
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after
④
from
【单选题】
When Mr. Jones gets old, he will ____ his business to his son.
①
take over
②
hand over
③
think over
④
get over
【单选题】
When we came back, he found his bicycle ____
①
was stolen
②
had stolen
③
had been stolen
④
is stolen
【多选题】
He_____________ to be reading when his mother came in.
①
drew a conclusion
②
nothing but
③
made himself seem
④
pretended
【单选题】
The boy lost his ____when he stepped on the icy road.
①
way
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weight
③
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【单选题】
13. He _____ a doctor when his mother was ill.
①
sent for
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随机题目
【单选题】
测定维生素C注射液的含量时，在操作过程中要加入丙酮，这是为了
①
保持维生素C的稳定
②
增加维生素C的溶解度
③
使反应完全
④
加快反应速度
⑤
消除注射液中抗氧剂的干扰
【单选题】
两步滴定法测定阿司匹林片的含量时，每1ml氢氧化钠溶液（0.1mol/L）相当于阿司匹林（分子量＝180.16）的量是：
①
18.02mg
②
180.2mg
③
90.08mg
④
45.04mg
⑤
450.0mg