Denny Crook was a famous photographer（摄影师）. He traveled all over the world, taking pictures for magazines and newspapers, and won many prizes.
“I’ll do anything to get a good photo,” he often said. “I’ll go anywhere at any time, even if it is ______.”
And he told the ________. He had photos of earthquakes, forest fires, floods and even wars. If something interesting happened, Denny went to photo it.
He was a married(已婚的) man and his wife often asked him to take her with him, but he always _____.”I’ll travel for my work, not for ________,” he told her . “You won’t enjoy yourself, and I won’t have ________ to look after you. Sometimes there’s not even anywhere to ________, and I have to sleep outside. I often don’t have a good ________or a bath for days. You won’t like it.”
“Denny, I’m not a child,” his wife didn’t ________. “I can look after myself. Please take me with you the next time you go overseas.”
Denny did not say anything, but he ________ about it, and when he was asked to go to Africa he said to his wife, “You can come to Africa with me if you want to. I’ve got to take photos of wild ________there. It should be interesting and not too uncomfortable.”
His wife was very ________, and at first she had a very enjoyable time.
Then Denny went to ________ some lions to photo. His wife went with him, but before long they became separated（分开）. She walked down one path while he walked down the other.
Suddenly, Denny heard her ________. He ran back and saw her running towards him. A huge lion was running after her.
Quickly Denny took his camera out of its case and ________ it at his wife and the lion.
Then he shouted, “________, woman! I can’t get you both in the picture!”
| 小题1: | | A．dangerous | B．natural | C．convenient | D．impossible |
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| 小题2: | | A．lie | B．reason | C．news | D．truth |
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| 小题3: | | A．agreed | B．refused | C．failed | D．answered |
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| 小题4: | | A．wealth | B．prize | C．fun | D．luck |
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| 小题5: | | A．money | B．time | C．interest | D．ability |
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| 小题7: | | A．meal | B．picnic | C．room | D．party |
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| 小题8: | | A．agree | B．understand | C．answer | D．complain |
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| 小题9: | | A．worried | B．forgot | C．asked | D．thought |
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| 小题10: | | A．land | B．flowers | C．animals | D．people |
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| 小题11: | | A．afraid | B．excited | C．surprised | D．disappointed |
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| 小题12: | | A．find | B．feed | C．drive | D．shoot |
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| 小题13: | | A．singing | B．crying | C．laughing | D．cheering |
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| 小题14: | | A．threw | B．fired | C．showed | D．pointed |
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| 小题15: | | A．Hurry up | B．Look out | C．Slow down | D．Go ahead |
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，上面连接一个质量
的物体A，平衡时物体距地面
，此时弹簧的弹性势能
。在距物体A正上方高为
处有一个质量
的物体B自由下落后，与弹簧上面的物体A碰撞并立即以相同的速度运动，已知两物体不粘连，且可视为质点，
。求：
