问题
单项选择题
一架飞机从北京飞往乌鲁木齐，用了3、5个小时，而从乌鲁木齐返航北京时，飞行速度不变，却只需要3小时，原因是（ ）。
A．地球自转的影响
B．两地时差的影响
C．中纬度高空西风的影响
D．飞行线路的影响
答案
参考答案：C
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一架飞机从北京飞往乌鲁木齐，用了3、5个小时，而从乌鲁木齐返航北京时，飞行速度不变，却只需要3小时，原因是（ ）。
A．地球自转的影响
B．两地时差的影响
C．中纬度高空西风的影响
D．飞行线路的影响
参考答案：C
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| "Who did this?" asked my teacher. Thirty children tries to think 1 not only what they had done, but also what our teacher might have found out. "Who did this?" she asked again. She never became angry, but she was this time. She held up 2 broken glass and asked,"Who broke the window?" "Oh, oh" I thought. I was the one 3 broke the window. I did not do it on purpose. It was caused by a 4 throw of a baseball. Why did it have to be me? If I admitted it, I would 5 in a lot of trouble. How would I be able to pay for a big window like that? I didn't want to raise my hand, 6 something much stronger than me pulled me up."I did it. Then I was silent. 7 was hard enough saying what I had. My teacher went to the bookshelf and took down a book. She then began walking to my desk. I feared she was going to punish me. "I know how you like birds," she said 8 she stood looking down at my face. "Here is a book about birds. It is your now. You will not be punished. But remember, it's only 9 your truthfulness." I couldn't believe it! I wasn't punished and I was getting a book! The 10 one that I had been saving up all my money to buy. | ||||
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