The earth is about     __     . as the moon.          
[     ]
A. as fifty time big      
B.  fifty times as big  
C.  as big fifty times
練習(xí)冊系列答案
相關(guān)習(xí)題

科目:初中英語 來源:2013屆江蘇省鹽城市景山中學(xué)中考模擬英語試卷(帶解析) 題型:閱讀理解

Have you ever wondered?
1. Why do airplanes take longer to fly west than east?
It can take five hours to go west-east from New York (NY) to London but seven hours to travel east-west from London to NY. The reason for the difference is an atmospheric phenomenon known as the jet (噴射) stream. The jet stream is a very high altitude wind which always blows from the west to the east across the Atlantic. The planes moving at a constant air speed thus go faster in the west-east direction when they are moving with the wind than in the opposite direction.
2. What would happen if the gravity on Earth was suddenly turned off?
Supposing we could magically turn off gravity. Would buildings and other structures (建筑物) float away? What happened would depend on how strongly the things were attached to the Earth. The Earth is moving at quite a speed, moving at over a thousand miles per hour. If you turn something around your head on a string (細(xì)繩), it goes around in a circle until you let go of the string. Then it flies off in a straight line. ‘Switching off’ gravity would be like letting go of the string. Things not attached to the Earth would fly off in a straight line. People in buildings would suddenly shoot upwards at a great speed until they hit the ceiling. Most things outside would fly off into space.
【小題1】What information can we get from the first passage?

A.It is the jet stream that affects how fast airplanes fly.
B.Planes go slower when they are moving with the wind.
C.It takes more time to fly from NY to London than from London to NY.
D.The jet stream always blows from the east to the west across the Atlantic.
【小題2】The word “shoot” underlined in the 2nd passage probably means “__________”.
A.send forB.move quickly
C.come outD.grow quickly
【小題3】It can be inferred that without gravity __________.
A.buildings and other structures would float away
B.trees and buildings would not so easily fly off
C.something around your head would not float away
D.everything outside buildings would fly off into space
【小題4】Which of the following statements is not mentioned in the passage?
A.It takes seven hours to travel from London to New York.
B.The earth is moving at a high speed
C.Everything on the earth will float away if there’s no gravity.
D.Everything not attached to the earth would fly off in a straight line.
【小題5】Where can we most probably read this text?
A.In a research paper.
B.In a short story.
C.In a travel magazine.
D.In a student’s book.

查看答案和解析>>

科目:初中英語 來源:2013屆福建福安南片區(qū)九年級上學(xué)期期中考試英語試卷(帶解析) 題型:單詞拼寫

根據(jù)句意及漢語提示完成句子 (每題兩分。共10分)
【小題1】記住過去、立足現(xiàn)在、展望未來是非常重要的。
It is important to remember the past, live in the present and ______       the future.
【小題2】China has       great      (取得進(jìn)步) in sending man-made satellites into space.
【小題3】There are             (太多) people on the earth.
【小題4】We must drive for                  (好幾個) hours to get to the store.
【小題5】你和他都是對的。Not ______ you but also he ______ right.

查看答案和解析>>

科目:初中英語 來源:2013-2014學(xué)年江蘇省鹽城市九年級3月學(xué)情檢測英語試卷(解析版) 題型:閱讀理解

 

China's first moon rover (月球車), Yutu, set off from the lander(登陸車) early on December 15, several hours after the Chang'e-3 probe (探測器) soft-landed on the moon surface.

The 140 kg six-wheeled rover touched the moon surface at 4:35 a.m., leaving deep lines on the loose moon land. This was recorded by the camera on the lander and the images were sent to the earth, according to the Beijing Aerospace Control Center. After that, the rover and lander will take photos of each other and start their own science explorations.

Earlier this morning, engineers made final checks of the environment of the landing area and the situation of the probe(探測儀). Yutu, reached its solar panel (光板) and started to drive slowly to the moon at 3:10 a.m.. It took Yutu nearly a whole hour to complete the simple task.

Chang'e-3 landed at the Bay of Rainbows on the moon, at 9:11 p.m. on December 14, making China the third country in the world to carry out such a mission (執(zhí)行此類任務(wù)) after the United States and Russia.

In old Chinese tales, Yutu was the white pet rabbit of Chang'e’s. The name for the rover was selected following an online survey that collected several million votes from people around the world.

The rover, 1.5 meters long with its two wings folded (折疊), 1 m in width and 1.1 m in height, is a perfect robot controlled by the command center from the earth. It will face challenges including temperature differences of more than 300℃ on the moon.

Yutu will do some research and look for natural resources (資源) for three months, while the lander will conduct an exploration at the landing place for one year. Then they will have a good rest on the moon and will not be used for a long time until China’s next probe visits the moon again.

1.Which is the best title for the passage above?

A. The American’sfirst rover on the moon  

B. The tale of Chang’e

C. The journey to the moon                    

D. Yutu explores the moon

2.Which is the correct order of the following events?

a. The 140 kg six-wheeled rover touched the moon surface.

b. The rover and lander will take photos of each other.

c. Yutu started to drive slowly to the moon.

d. Chang'e-3 landed at the Bay of Rainbows on the moon.

A. a-b-c-d                      B. c-d-a-b                        C. d-c-a-b                     D. c-a-b-d

3.What does the underlined word “width” mean in Chinese?

A. 智力                        B. 寬度                 C. 重量                        D. 長度

4.Which of the following is true according to the passage?

A. The moon had been visited by only two countries before 2013.

B. Yutu is a perfect robot under the control of its own computer.

C. Yutu and Chang’e will return to the earth after the one-year mission.

D. Chang’e-3 is 140 kg in weight.

5.There will soon be a second moon rover to explore the moon. Which is its proper name?

A. Chang’e-5               B. Yutu-2                     C. Shenzhou-11       D.Tiangong-2

 

查看答案和解析>>

科目:初中英語 來源:2013-2014學(xué)年山東省九年級中考模擬英語試卷(二)(解析版) 題型:其他題

閱讀下列短文,根據(jù)其內(nèi)容完成后面各項(xiàng)任務(wù)。

“ Green ” is more than just a colour. It means that you should live to protect the environment . —the water, the land and the air. You can be a green kid by following these steps.

Reduce( 減少)it.

When you use less of something, you do a good thing for the Earth . For example, a shorter shower means you use less water. ①Turn off the water when you are brushing your teeth .

Reuse it .

Many times, even if you don' t need something, someone else might just need it. For example, if your younger sister does' t play with her bear toy, you can give ② it to your neighbour. Try to change books, toys, even clothes with friends .

Enjoy it .

It 's true that pollution is a great problem now, ③ ____________ the Earth is still a beautiful and interesting place to explore (探索). Go for a hike (遠(yuǎn)足), visit nature centres, and gardens, climb mountains and take a boat in the rivers …. Outdoor activities are good for you. You can also plant trees, collect reusable (可重復(fù)使用的)things …. Being a green kid is so easy. 

                                                (2013年聊城市中考試題)

根據(jù)短文內(nèi)容,完成下列各題。

1.回答問題:How many steps ( to be a green kid ) are mentioned in the passage ? 

_____________________________________________________________________

2. 將文中劃線①的句子譯成漢語

_____________________________________________________________________

3.文中劃線 ②的 “it”指代的是什么?

_______________________________________________________________________.

4. 在文中劃線部分③的 空白處填上一個恰當(dāng)?shù)倪B詞使句子通順完整,符合邏輯。_____________________________________________________________________

5.從短文中找出可以替換下面所給句子的一句話。)

It is so easy to be a great kid .

___________________________________________________________________。

 

查看答案和解析>>

科目:初中英語 來源:2012-2013學(xué)年內(nèi)蒙古九年級上學(xué)期期末考試英語試卷(解析版) 題型:完型填空

The earth is our home and we must take good care of it. That is to say we must   1   the land, air and water clean. But man    2  a lot of pollution on earth since he first made fire, washed his clothes in the river and threw rubbish on the ground. Many years ago, pollution was not so serious   3    there were not so many people.

There were enough    4   air, land and water. When the land or the river was dirty in one place, man moved to    5   place. Man is    6   the whole world now. So there is   7    enough clean air, nor clean land, nor clean water now. The more people there are in one place,    8    environment they maybe have.

Perhaps you are afraid     9   is endless(無休止的) for people to produce pollution.

    10  , we are glad to tell you that people have come to know the danger of pollution. And you can find more and more people are working hard to protect our earth.

1.                A.have           B.take           C.watch    D.keep

 

2.                A.produced       B.has produced    C.is producing   D.will produce

 

3.                A.so             B.if              C.because  D.but

 

4.                A.clean          B.old            C.dirty D.new

 

5.                A.other          B.the other       C.a(chǎn)nother  D.others

 

6.                A.pollute         B.polluting        C.clearing  D.clear

 

7.                A.neither         B.both           C.either    D.none

 

8.                A.the worst       B.the worse       C.the bad   D.worse

 

9.                A.that           B.this            C.what     D.it

 

10.               A.Quickly         B.Especially       C.Luckily    D.Anyway

 

 

查看答案和解析>>

同步練習(xí)冊答案