大量试验研究和工程实践得到的结论是：影响混凝土质量的显然不是使用了矿物掺和料，而是矿
题型：单项选择题
问题：
大量试验研究和工程实践得到的结论是：影响混凝土质量的显然不是使用了矿物掺和料，而是矿物掺和料的使用方法；你认为是（）。
A.错误的
B.正确的
C.影响混凝土耐久性的是掺用了矿物掺和料
D.不能确定
题型：单项选择题
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.