There are forty-eight students in our class. There are twenty-three boys and twenty-five girls. Some students live near the school, and some others live very far from the school. About half of the students come to school by bike. They often get to school at a quarter to seven. About ten students often come to school by bus. They often go to school very early, too. Another ten students come to school on foot. Their homes are near the school, but they are often late for school, because they get up very late.

1.More than half of the students usually come to school           .

2.Some students are often late for school because          .

3.About        students go to school by bike.

4.About ten students often come to school by bus because            .

5.How many students get to school by bus and on foot?

 Computers can injure(伤害) you. Most other injuries happen suddenly. For example, if you    a bike and break your arms, it happens very    . But computer injuries slowly.You probably know how to ride a bike safely. Now learn to     a computer safely.
Your eyes
   light can injure your eyes,     never sit too close to a computer screen. Your eyes should be    50 centimeters（厘米）    the screen（平幕），  Remember to look away from it sometimes. This gives your eyes a rest.
When you use a computer, the window    be on your left or your right. If it is behind you, the light will reflect on (反射) the screen. If the window is in front of you, the sun and the screen will     shine into your eyes.
Your hands and wrists (手腕)
Hand and wrist injuries can happen because the hands and wrists are moved in the same way     times. If you use a keyboard for a long time,      these three rules: 1) Rest your wrists on something. 2) Keep your elbows at the same height as the keyboard. 3) Stop something and exercise your hands, wrists and fingers in a different way.
Your back
Some people sit for many hours in front of a computer. If you sit in the wrong way, you can injure your back or your neck. So you should sit with your back straight. The top part of the screen should all be in front of your eyes. Your forearms, wrists, hands and the upper part of your legs should all be parallel (平行) to the floor. If you are sitting for a long time, get up      30 minutes and      your arms, legs and necks.
   your computer, but use it safely.

1.Shanghai is larger than any other city in China.(改为同义句)

Shanghai is ____ ____ ____ in China.

2.We enjoyed ourselves in the zoo of Beijing. (改为同义句)

We ____ ____ in the zoo of Beijing.

3.I think he must be a teacher, ____ ____?(完成反义疑问句)

4. Get up early, or you will be late.(改为同义句)

____ ____ ____ get up early, you ____ be late.

5.We spent one and a half hours finishing this notice. (改为同义句)

We spent one ____ and a ____ finishing this notice.

Li Ming   26  often late for school. The teacher is very angry with him. “  27  are you often late for school?” asks the teacher. “Because I often get up  28 ,” answers Li Ming. “  29  clock can wake (唤醒)you up,” says the teacher.“Yes, you are   30  .But it  31  work ,” says Li Ming.“Why don't you   32  it?” asks the teacher again.“Oh, I don't want it to work   33  ,” answers Li Ming.“If all of us are late for school,  34  do you like it?” says the teacher.“Oh, that's great! There will be  35  schools in the world,” says Li Ming with a smile.

1. A. is             B. be              C. does             D. do

2. A. Why       B. When            C. What             D. Where

3. A. quickly        B. early               C. late             D. slowly

4. A. You            B. Your                C. Yours                D. Yourself

5. A. right     B. wrong           C. fine             D. OK

6. A. don't     B. doesn't         C. isn't                D. not

7. A .take           B. bring               C. make             D. mend(修理)

8. A. good           B. nice                C. well             D. fine

9. A. what      B. why             C. how              D. where

10. A. no            B. not             C. little               D. without