目前人类利用的水资源主要有[ ] A.海洋水 B.冰川水 C.地下水 D.江河湖 发布时间:2017-06-25 20:41 │ 来源:www.tikuol.com 题型:选择题 问题: 目前人类利用的水资源主要有[ ]A.海洋水B.冰川水 C.地下水 D.江河湖泊水、浅层地下水
题型:选择题 补全对话A. That's true. B. How did you like it?C. The concert ended at 10:00 p. m.D. I went there with my parents.E. How did you go there?F. It was called '6Saving the Children".G. The concert was held for collecting money for poor children. A: Hi, Kate! Did you go to the concert last night?B: Yes, 1 A: 2 B: Wonderful. Many famous singers sang at the concert. 3 A: What does it mean?B: 4 You know many children in the world don't have enough food.A: 5 B:I think people all over the world should help them.A: That's right!1. _____ 2. _____ 3. _____ 4. _____ 5. _____ 查看答案
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题型:选择题 一个半径较大的透明玻璃球体,截去上面的一大部分,然后将这—部分放到标准的水平面上,现让单色光竖直射向截面,如图所示,在反射光中看到的是( )A.平行的亮暗相间的干涉条纹B.环形的亮暗相间的干涉条纹C.只能看到同颜色的平行反射光D.一片黑暗 查看答案