题目内容

Eddie eats _________ food every day. Hobo thinks he needs some _________.

A. too much; exercises B. too many; exercises

C. too many; exercise D. too much; exercise

 

D

【解析】

试题分析:句意为:艾迪每天吃太多的食物。洪波认为他需要做一些运动。too much :修饰不可数名词,too many:修饰名词复数。此外,exercise表示“锻炼”时,是不可数名词,表示“练习”时是可数名词。根据语境可知应选D。

考点:考查可数名词和不可数名词。

 

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Computers can injure(伤害)you. Most other injuries happen suddenly. For example, if you fall off a bike and break your arms, it happens very quickly. But computer injuries happen slowly.

You may know how to ride a bike safely. Now learn to use a computer safely.

Your eyes

Too much light can injure your eyes, so never sit too close to a computer screen. Your eyes should be more than 50 centimeters from the screen. Don’t forget to look away from it sometimes. This gives your eyes a rest.

When you use a computer, the window should be on your left or your right. If it is behind you, the light will reflect on the screen(反射在屏幕上). If the window is in front of you, the sun and the screen will both 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 hundreds of times. If you use a keyboard for a long time, follow these three rules:

1) Rest your wrists on something.

2) Keep your elbows(肘)as high as the keyboard.

3) Stop sometimes 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 shouldn’t bend(弯曲) your back when you sit. The top part of the screen should 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 every half an hour and exercise your arms, legs and neck.

Enjoy your computer, but use it safely.

 

Title: How to use a computer safely

Different

1. of your body

Causes(原因) of the injuries

Some 2. of keeping you away from computer injuries

Your eyes

◆Too much light can injure your eyes.

◆Don’t sit too close to a computer screen.

◆Your eyes should be 3. 50 centimeters from the screen.

◆ 4. to look away from the screen sometimes.

 

Your

5.

and wrists

 

◆You 6. them in the same way hundreds of times.

◆You use a keyboard for a long time.

◆ 7. your wrists on something.

◆Keep your elbows at the same 8. as the keyboard.

◆Exercise your hands, wrists and fingers in different ways.

 

Your back

 

◆You sit for many hours

9. a computer.

◆ You sit in the wrong way.

◆You should keep your back 10. when you sit.

◆Get up every half an hour if you are sitting for a long time.

 

 

 

 

 

 

 

 

 

 

 

 

 

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