小题1:Using your computer correctly. 小题2:The way to save paper. 小题3:A beautiful bridge 小题4:A fast and cheap way to send a message 小题5:.Experiencing yesterday and tomorrow in one day
A．Many people use the paper only on one side. Why not use both sides? Some students only use half the pages in their notebooks. Try to use up all the paper.
B．In San Francisco, there is a beautiful bridge. It took more than four years to build it, and the construction was finished in 1937.
C．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 and dry room, do not put water or food near your computer, keep the screen clean and not too bright.
D．E-mails are becoming more and more popular. You can send and get e-mails everywhere. It is convenient to use e-mails, and they are much cheaper than long-distance telephone calls.
E. When you cross the International Date Line , you change your calendar one full day. Traveling east, today becomes yesterday. Traveling west, it is tomorrow.
