下面漫画“如此孝心”说明了（  ）

在1×2×3×4×5×…×99×100的积中，从右边数第20个数字是____ ．

完形填空
      This is my desk, and 1 books are on it. One is yellow and the other(另外的) is blue. You can see a 2 on the desk, too. The clock is red. My pencil case is3 the desk, too. A  pen, an eraser  and a ruler4in it. The pen is black. The5 is yellow, and the ruler is white.
    6 is my pencil? Well, it's under the desk. A baseball is under the7too. But the baseball isn't 8. It's my brother's. Is my computer under the desk, too? No，9isn't. Where is it? I can't10it in the room.

读漫画“鲸吞农田”，下列措施不能有效解决漫画反映的问题的是(    )

①控制人口增长   ②跨流域调水   ③保护耕地   ④垃圾分类处理

Only _______ people can have a good understanding of the lecture given by the scientist.