英语周报2021-2022学年七年级新目标版第6期答案

英语周报2021-2022学年七年级新目标版第6期答案，目前我们趣对答案已经整理了英语周报2021-2022学年七年级新目标版第6期答案的各科答案和试卷，更多试卷答案请关注本趣对答案。

Passage 5When the earthquake was happened in 2008 my auntwas still a little girl in A small county in Sichuan. Todayashe can wel remember doctors and nurses in whiteovcrallhiwere busy day and night savc thewho/thatsavinginured in our hometown. It was then when she made uher mind to be someone like them. Her drcam came trulyfter she graduated from a local medical school. On1rJanuary 2020, when bad news came that Hubei was badlyin need of doctors and nurses to fight COVID-19, sheapplied to be there to help out but her application wasapproved. Before she leaves, she told us she was gratefuleltfor what people did for us after the earthquake and thatshe had decided to pay them forward.

18.D由题可知,物块缓慢移动整体都处于平衡状态,则绳OO的拉力等于下面绳对A的拉力和绳对B的拉力的合力,由于绳对A的拉力和绳对B的拉力大小相等,都等于A物体的重力的大小,但是由于B物体上移,导致二者之间的夹角变大则根据平行四边形定则可知合力变小,即绳OO的、[+T拉力逐渐减小,故选项A、B错误;开始时刻,对物块B受Na力分析如图所示;当物块B上移时a先减小后增大,在垂直斜面方向根据平衡方程可知:斜面对物块B的支持力先减小后增大,在沿斜面方向根据平衡条件可知外力F逐渐变大,故选项C错误,选项D正确1 2mg