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【单选题】
下述反应不能用来制备a,b-不饱和酮的是
A.
丙酮在酸性条件下发生羟醛缩合反应
B.
苯甲醛和丙酮在碱性条件下发生反应
C.
甲醛和苯甲醛在浓碱条件下发生反应
D.
环己烯臭氧化、还原水解，后在碱性条件下反应
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【单选题】听力原文：M：I was shocked when I heard you'd finished your research project a whole month ago． W：How I managed to do it is still a mystery to me． Q：What does the woman mean? (17)
A.
She's not sure how she had finished it so early.
B.
She wasn't able to manage the project well.
C.
She's not sure how to solve the mystery.
D.
She didn't think it was shocking.
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【单选题】听力原文：M: I'm really shocked at the air quality of the inland valley. Look at it. W: Yes, over the last few decades there has been an enormous emphasis on development with hardly any concern for the env...
A.
The development of the automobile.
B.
Declining air quality.
C.
The structure of nitrous oxides.
D.
Air quality management.
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【单选题】下面哪种动物的精囊腺发达( )。
A.
猪
B.
牛
C.
羊
D.
狗
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【单选题】如果某类商品是富有弹性的，该商品的价格上升，则总收益（ ）？
A.
上升
B.
下降
C.
不变
D.
以上情况均有可能
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【单选题】听力原文：M: I was shocked when I heard you'd finished your research project a whole month earlier. W: How I managed to do it is still a mystery to me. Q: What does the woman mean? (16)
A.
She was not able to manage the project well.
B.
She had managed to recover from the shock.
C.
She was not sure about the mystery in the project.
D.
She wasn't sure how she could finish it so early.
查看完整题目与答案
【单选题】听力原文：W: Were you hurt in the accident? M: I was shocked at the time, but wasn't hurt at all. My bike was totally damaged though. Q: What do we know about the man? (4)
A.
He has got a heart attack.
B.
He was unharmed.
C.
He was badly hurt.
查看完整题目与答案
【单选题】I'm shocked to hear that he ________ an accident yesterday. [     ]
A.
came about
B.
broke out
C.
took place
D.
met with
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【单选题】I’m shocked and appalled at the news.
A.
appealed
B.
terrified
C.
afraid
D.
alerted
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【简答题】管线工程综合规划示意图的比例尺与城市总体规划图相同,一般为( )。
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【单选题】听力原文：M: I was shocked when I heard you'd finished your research project a whole month earlier. W: How I managed to do it is still a mystery to me. Q: What does the woman mean? (19)
A.
She's not sure how she was able to finish so early.
B.
She wasn't able to manage the project so early.
C.
She's not sure how to solve the mystery.
D.
She still hasn't heard what was shocking.
查看完整题目与答案
相关题目：
【单选题】听力原文：M：I was shocked when I heard you'd finished your research project a whole month ago． W：How I managed to do it is still a mystery to me． Q：What does the woman mean? (17)
A.
She's not sure how she had finished it so early.
B.
She wasn't able to manage the project well.
C.
She's not sure how to solve the mystery.
D.
She didn't think it was shocking.
查看完整题目与答案
【单选题】听力原文：M: I'm really shocked at the air quality of the inland valley. Look at it. W: Yes, over the last few decades there has been an enormous emphasis on development with hardly any concern for the env...
A.
The development of the automobile.
B.
Declining air quality.
C.
The structure of nitrous oxides.
D.
Air quality management.
查看完整题目与答案
【单选题】下面哪种动物的精囊腺发达( )。
A.
猪
B.
牛
C.
羊
D.
狗
查看完整题目与答案
【单选题】如果某类商品是富有弹性的，该商品的价格上升，则总收益（ ）？
A.
上升
B.
下降
C.
不变
D.
以上情况均有可能
查看完整题目与答案
【单选题】听力原文：M: I was shocked when I heard you'd finished your research project a whole month earlier. W: How I managed to do it is still a mystery to me. Q: What does the woman mean? (16)
A.
She was not able to manage the project well.
B.
She had managed to recover from the shock.
C.
She was not sure about the mystery in the project.
D.
She wasn't sure how she could finish it so early.
查看完整题目与答案
【单选题】听力原文：W: Were you hurt in the accident? M: I was shocked at the time, but wasn't hurt at all. My bike was totally damaged though. Q: What do we know about the man? (4)
A.
He has got a heart attack.
B.
He was unharmed.
C.
He was badly hurt.
查看完整题目与答案
【单选题】I'm shocked to hear that he ________ an accident yesterday. [     ]
A.
came about
B.
broke out
C.
took place
D.
met with
查看完整题目与答案
【单选题】I’m shocked and appalled at the news.
A.
appealed
B.
terrified
C.
afraid
D.
alerted
查看完整题目与答案
【简答题】管线工程综合规划示意图的比例尺与城市总体规划图相同,一般为( )。
查看完整题目与答案
【单选题】听力原文：M: I was shocked when I heard you'd finished your research project a whole month earlier. W: How I managed to do it is still a mystery to me. Q: What does the woman mean? (19)
A.
She's not sure how she was able to finish so early.
B.
She wasn't able to manage the project so early.
C.
She's not sure how to solve the mystery.
D.
She still hasn't heard what was shocking.
查看完整题目与答案