He was told it would be at least three months______ he could recover and return to work．_刷题宝

题干

He was told it would be at least three months______ he could recover and return to work．

A：Whe

B：before

C：since

D：that

上一题下一题 0.0难度选择题更新时间:2018-10-16 10:10:38

答案(点此获取答案解析）

B

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如图所示是正在黄岩岛海域执行维权护渔任务的中国渔政310船，该船是中国最先进的渔政船，设有直升机起降平台和机库．如果船以18km/h的航速行驶了72km，所需的时间为____ h；如果船中的一部分直升机起飞执行任务后，船受到的浮力____（填“增大”、“不变”或“减小”）．

同类题2

The old worker _______ a very practical plan at the meeting yesterday, but it was turned down by the manager.

同类题3

读一读，选择正确答句

⑴Does she teach math?____ A. I am 160 cm tall.

⑵How tall are you?____ B. I feel sick.

⑶How do you feel?____ C. I went to Xinjiang by bus.

⑷What did you do last weekend?____ D. Yes, she does.

⑸When is your birthday?____ E. I visited my grandpa.

⑹What day is it today?____ F. It's Wednesday.

⑺Where did you go yesterday?____ G. It's on January 1st.

⑻Is she playing the violin now?____ H. Come in, please.

⑼May I come in?____ I. I went to Shanghai

⑽How did you go home yesterday?____ J. Yes, she is.

同类题4

半导体生产中常需要控制掺杂，以保证控制电阻率，三氯化磷（PCl₃）中一种重要的掺杂剂．实验室要用黄磷（白磷）与干燥的Cl₂模拟工业生产制取PCl₃，装置如下图所示：（部分夹持装置略去）

已知黄磷与少量Cl₂反应生成PCl₃，与过量Cl₂反应生成PCl₅和HCl，遇O₂会生成POCl₃，POCl₃溶于PCl₃，PCl₃、POCl₃的熔沸点见下表：

物质	熔点/℃	沸点/℃
PCl₃	﹣112	75.5
PCl₅	2	105.3

请回答下列问题

同类题5

下列植物对二氧化硫污染环境具有指示作用的是（）

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