Since the villagers’ houses have been washed away by the floods,the soldiers
题目
Since the villagers’ houses have been washed away by the floods,the soldiers
are heling them_tents.填什么?
答案
考察句型:help sb do sth.
填:pitch 或者 set up 或者 put up.
Pitch a tent(一个空就填它)
set up a tent(两个空就填它或者下面的)
put up a tent
以上都是搭建帐篷的意思.
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已知函数f(x)=x,g(x)=alnx,a∈R.若曲线y=f(x)与曲线y=g(x)相交,且在交点处有相同的切线,求a的值和该切线方程.
我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
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