题目

把一木块放在水平桌面上保持静止，下面说法中正确的是  （      ）A.木块对桌面的压力是弹力，是由于桌面发生形变而产生的B. 木块对桌面的压力和桌面对木块的支持力是一对作用力和反作用力C. 木块对桌面的压力就是木块的重力D. 木块的重力和桌面对它的支持力是一对作用力和反作用力  答案：B解析:略 用who / whom / which / where / when / that 填空。1. Here are players from Japan, some of ______ are our old friends.2. She lives in a small village, ______ is only three miles from here.3. She is going to spend the summer holidays in Shanghai, ______ she has some friends.4. We'll put off the meeting till next week, ______ we won't be so busy.5. The sun gives the earth light and heat, ______ is very important to the living things.6. Those ______ want to go to the computer room write your names here.7. He was often late, ______ made his teacher very angry.8. Who is the person ______ is standing at the gate?9. He talked about the teachers and schools ______ he had visited.