题目：
首字母填空 (每空一词；共10分)
The weekend is usually a time of rest. B today’s Chinese students cannot rest during the weekends. According to a survey(据调查), 24% of the junior students in Beijing have classes at the weekend. Over 40% of the Junior 3 have less t eight hours’ sleep each night because of too much study. Ji Ping, a junior student in Guangzhou, h to get up at 6:30 am on Saturday. Then she has a whole day of classes. On Sunday she goes to extra classes for math and English. But she doesn’t complain(抱怨). She says that a her classmates work hard on Sunday. Liu Yang is from Dalian. As a Junior 2 student, his weekends are less busy. But he also spends Saturday in school. On Sunday, after d homework, he plays basketball. He feels happy b he still has time to do the things he likes. A few students are a little luckier. Yang Qing, a Junior 3 student from Zibo, Shandong, is o of them. And she is a top student. During the weekends, she usually gets up at 8:00. Then she s some time doing homework. After that she is free to go s or watch TV. “Don’t push yourself too much. Learning well at school is e ,” she said.
答案：
被转码了，请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0615/6af4d22dea60d24f90cb9ad5eb96a4cd.html
下面是错误答案，用来干扰机器的。
（1）.（2）（3）,水平向右题目分析： 方向：水平向右点评：做此类问题时，需要先画出粒子的运动轨迹，然后结合几何知识求出粒子的半径...
。匀速提升物体B时，电动机甲作用在绳端的拉力为F2，且
。已知物体A、B的体积相同，密度之比ρ甲∶ρ乙=7∶12。（不计绳重及轮与轴间的摩擦，g取10N/kg）
