短文填空 先通读下面的短文，掌握其大意，然后根据短文内容和所给首字母，在空格内填入一个适当的词，使短文意思完整。所填单词在答题卷上必须完整写出，并将答案写在答题卡标有题号的横线上。（本大题共5分，每格0.5分）
Everyone would like to be remembered. A few people e 小题1: try to do something that no one else in history has ever tried to do. These people sometimes have their names r 小题2: in the Guinness Book of Records.
Often it takes a group of people to do something unusual. One such team paddled a bathtub 145 kilometres for 24 hours. This group had 13 m 小题3: . They paddled their bathtub on a river near Ashford, Great Britain on May 28th and 29th, 1983. A month l 小题4: , a racing team of hospital bed pushers in Avon, Great Britain, pushed a hospital bed 16 kilometres in j 小题5: minutes. However, the distance record for hospital bed pushing is still held by the men of Bruntsfield Bedding Center. This team from Edingburg pushed a hospital bed 5,203 kilometres in 1979. It took the team 35 days to c 小题6: the distance.
Another group of record makers held the h 小题7: dinner party in the world. Nine people from Sydney, Australia, climbed Mountain Huascaran on June 28th , 1989. The climbers t 小题8: a dinner table, chairs, and a meal up the mountain. When they reached the top of the mountain, they had to c 小题9: warm clothes to have dinner.
People all over the world are trying hard to do something unusual to make a record. It should be understood, however, that now not all the records will be k 小题10: in the Guinness Book of Records.
的木块A放在质量为M的三角形斜面体B上，现用大小不相等、方向相反的水平力
分别推A和B，它们均静止不动，且
，重力加速度为
， 则
，故整体与地面间有摩擦力，摩擦力方向水平向右，大小为
，竖直方向有N=（M+m）g，C、D正确；AB之间可以没有摩擦力的作用，AB都能保持现有的状态，此时A物体受到三个力的作用，A、B错误。