与20世纪70年代以来，我国共减少出生人口约3亿人，这主要得益于 A．计划生育政 发布时间：2017-06-08 23:57 │ 来源：www.tikuol.com 题型：选择题 问题： 与20世纪70年代以来，我国共减少出生人口约3亿人，这主要得益于A．计划生育政策B．经济发展C．卫生事业发展D．科技进步
题型：选择题 小题1: Many people write on paper only one side. Why not try using both sides? Some students only use half the pages in their notebooks before getting new ones. Try to use up all the paper. People often give cards on festivals. How about trying to send e—mail instead? 小题2: There’s many poor families in China. You may ask your parents to keep your unwanted clothes. Then you can pass them to poor kids. You’ll feel happy that you are helping someone else. Also, you can see if your friend wants them before throwing them away. 小题3: In San Francisco of the US, there is a beautiful bridge. It cost more than four years to build it, and it was finished in 1937. You can cross the bridge by car or on foot, but you must pay. Do you know the bridge? Yes, it is the Golden Gate. 小题4: Many people can use computers, but few of them know how to use them correctly. Remember the following when you use your computer. Keep your computer in a cool, dry room; don’t put water or food near your computer; keep your screen clean and not too bright. 小题5: E—mail means messages sent from one computer to another. It is becoming more and more popular. You can send and receive e—mails everywhere. It is quick to use e—mails, and it is much cheaper than long—distance telephone call.A．Use computer in right ways.B．Make old clothes useful.C．The golden Gate.D．A new way of sending messages.E.How can paper be saved? 查看答案