题目： —Can you guess ________ the MP4 player yesterday? —Sorry, I’ve no idea about it. [ ]A. how much did he pay for it B. how can he get C. how much he paid for D. how he has got 答案： 答案：C
题型：选择题 The shop ________ at 8:00 a.m. and it ________ for ten hours every day.A．opens; is openB．is opened; opens C．is open; has openedD．opened; opens 查看答案
题型：选择题 如图所示，木块在推力F作用下，向右做匀速直线运动．下面说法正确的是（ ）A．推力F与摩擦力的合力方向一定向左B．推力F与摩擦力的合力方向一定向右C．推力F与摩擦力的合力方向一定向下D．推力F与摩擦力的合力一定为零 查看答案
