问题 计算题

图是探究“平面镜成像特点”的实验装置。

(1)实验中选择两根完全一样的蜡烛A和B是为了比较像与物的________。

(2)对着玻璃板既可看到前面蜡烛在玻璃板后所成的像,同时又可看到放在玻璃板后的蜡烛。则前者是光的________形成的像,后者是光的_________形成的像。(填“折射”或“反射”)

答案

(1)大小

(2)反射;折射

多项选择题
完形填空

根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。答案填在第II卷的相应位置。

Health is the most important thing in the world. Nothing is more important than health. If one takes away our money, houses, cars, or even our clothes, we can still survive. 小题1:  That is why we always try to eat in a healthy way and exercise regularly.

How can we keep healthy? In order to eat healthily, I usually avoid eating food high in fat, like French fries or cookies, which are junk foods. 小题2: Besides, I only eat little meat.

小题3:  Taking exercise every day helps us build a strong body. Regular exercise is an important part of keeping me healthy.

What’s more, I think friends are an important part of one’s health. 小题4:  I always feel better when I am with friends than when I am alone. When I am with my friends, I always laugh. Laughing is also an important part of health. It is good to stay with my friends.

By eating properly and exercising regularly, I can keep my body at a proper weight and keep healthy. By spending time with my friends, I can keep my mind as well as my body happy. These things sound easy to do, but not many people can manage them. 小题5:

A.Many studies show that people with a narrow range of social contacts often get sick.

B.There are some people who like staying alone, but they keep healthy.

C.On the other hand, doing exercise is very important.

D.But if our health was taken away, it is certain that we would surely die.E. I think a strong will is necessary if we want to keep healthy.

F. I eat a lot of vegetables and fresh fruit which are full of vitamins.

G. Some people appear fat because they often eat too much.