You must keep your eyes _____, let’s begin th...

You must keep your eyes _____, let’s begin the game.

A．close　　　　　　 B．closed

C．closing　　　　 D．to close

九年级英语单项填空中等难度题查看答案及解析

When you do eye exercises, you must keep your eyes_______.

A. close　　 B. closed　　 C. open　　 D. closing

九年级英语单选题中等难度题查看答案及解析

You must keep your eyes ________.

A. close  B. closed  C. closing  D. to close

九年级英语单项填空中等难度题查看答案及解析

When you walk in a busy street, you must ________ your eye ________ the traffic.

A.make; at B.keep; at C.make; on D.keep; on

九年级英语单选题中等难度题查看答案及解析

You should keep your eyes _____ when you do eye exercises.

A. close   B. open   C. closed   D. opened

九年级英语单项填空中等难度题查看答案及解析

You’d better keep your mouth ________ and your eyes________.

A. close; open　　 B. closed; open　　 C. closed; opened　　 D. close; opened

九年级英语单选题中等难度题查看答案及解析

Life can be hard __________, but you must keep your head held high and stay positive.

Never let anyone bring you down.

A. at all times　　　　　 B. all the time

C. at a time　　　　 　 　 D. at times

九年级英语单项填空中等难度题查看答案及解析

When the earthquake happens, you must ________ the tall building.

A. keep away from　　 B. stay close from　　 C. set up　　 D. put up

九年级英语单选题中等难度题查看答案及解析

Please keep your mouth 　 ____　　　　 and your eyes 　　　 _______　 .

A. open, close　 　 B.open,　 closed

C. opened, closed　 D. opened, close

九年级英语单项填空中等难度题查看答案及解析

首字母填空

Suppose you are reading a book. Suppose you suddenly close your eyes, can you still see the book? "Of course not." you will say. But can you tell why? You would p1.say, "When I close my eyes, my eyesight cannot get out of my eyes to get to the book." Many others might give an explanation(解释) very much like the above. But this explanation is w2. .

You cannot see any object if light from that object doesn’t get i3.your eyes. Some of the things you see give off light of their own.

The sun, the star, a lighted lamp are examples that can be seen by their own light. Such things are luminous(发光的). Most of the things you see are not g4.off light of their own. They are simply reflecting(反射) light that falls on them from the sun or some other luminous bodies. The moon, for example, doesn't give off any light of i5. own. It's non-luminous. You see it because sunlight falls on it and some of it reflects in your direction. So moonlight is only second-hand sunlight.

When you look at a book, it sends to your eyes some of the light which falls on it, and you see the book. If light could be kept out from w6.you are, so that there would be no light for the book to reflect, then you could not see the book e 7.with your eyes wide open.

Light travels so fast that the time it t8.from the book to your eyes is so short as if there was none at all. Light r 9.us from the moon, which is about 380,000 kilometers away, in only a little more than a s10..

九年级英语单词填空中等难度题查看答案及解析