平行四边形是一种特殊的梯形。[ ]_爱下问搜题

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平行四边形是一种特殊的梯形。[ ]

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There was a man who had a little boy that he loved very much．Every day after work the man would come home and 36 with the little boy．He would always 37 all of his extra time with the little boy．
One night, while the man was at work, he 38 that he had extra work to do for the evening, and that he wouldn't be able to play with his little boy．39 he wanted to be able to give the boy something to keep him 40．So, looking around his office, he saw a magazine with a large 41 of the world on the cover．He got a（n） 42 ．He removed the map, and then patiently tore it up into small pieces．Then he put all the 43 in his coat pocket．
When he got home, the little boy came 44 to him and was ready to play. The man 45 that he had extra work to do and couldn't play just now．He 46 the little boy into the dining room, and 47 all the pieces of the map．He spread them on the table．He explained that it was a map of the world, and that by the time he could 48 together, his extra work would be 49_, and they could both play．Surely this would keep the child busy for hours, he thought．
About half an hour later the boy came to the man and said, "Okay, it's finished. Can we play now?" The man was50, saying, "That's impossible．Let's have a look" And 51 enough, there was the picture of the world, all put together every piece in its 52 ．The man said, “That’s amazing! How did you do that?” The boy said, “It's 53．On the 54 of the page is a（n）55 of a man．When I put the man together the whole world fell into place.”

A．information

B．get it around

C．put it back

D．turn it over

D．interesting

单项选择题

（）是冠心病最严重的临床症状。

A.心绞痛

B.急性心肌梗死

C.心律失常

D.心跳过慢