Scientistshavealwayswantedtoknowmoreabouttheuniverse.Ye...
问题详情:
Scientists have always wanted to know more about the universe.
Years ago they knew many things about the moon. They know how big it was and how far away it was from the earth. But they wanted to know more about it . They thought the best way was to send men to the moon.
The moon is about 384,000 kilometres away from the earth. A plane cannot fly to the moon because the air rcaches only 240 kilometres away from the earth. But something can fly even when there is no air. That is a rocket.
How does a rocket fly? There is gas(气体) in the rocket. When the gas is made very hot inside the rocket, it will rush out of the end of the rocket, so it can make the rocket fly up into the sky.
Rockets can fly far out into the space. Rockets With men in them have been to the moon. Several rockets without men in them have flown to another planet(行星) much farther away than the moon. One day rockets may be able to go to any place in space.
( )1. Scientists have known the moon is.
A. how long B. how heavy C. how old D. how big
( )2. The earth is about 384,000 kilometres away from the .
A. space B. universe C. sun D. moon
( )3. A plane cannot fly to the moon because .
A. there is no air above 240 kilometres away from the earth
B. there is no gas in the plane
C. the plane is not strong enough
D. the plane must be driven by a man
( )4. The hot gas in the rocket is used for .
A. keeping the air in the rocket fresh
B. keeping the men in the rocket warm
C. making the rocket fly up
D. cooking food for the men in the rocket
( )5. Several rockest without men in them have flown to .
A. the stars B. the satellites of the sun
C. the sun D. another satellite of the sun
【回答】
1D 2D 3A 4C 5D
知识点:人物传记 故事阅读类
题型:阅读理解
-
________hislessons,hefailedintheexam.A.Notreviewing B.H...
问题详情:________hislessons,hefailedintheexam.A.Notreviewing B.Havingnotreviewed C.Notreviewed D.Nothavingreviewed【回答】D知识点:非谓语动词题型:选择题...
-
下列与实验相关的叙述正确的是 A.稀释浓硫*时,应将蒸馏水沿烧杯内壁缓慢地注入浓硫*中B.配制溶液时,若加水...
问题详情:下列与实验相关的叙述正确的是 A.稀释浓硫*时,应将蒸馏水沿烧杯内壁缓慢地注入浓硫*中B.配制溶液时,若加水超过容量瓶刻度,应用胶头滴管将多余溶液吸出C.配制1mol·L-1300mLNaCl溶液可以选择一个50mL的容量瓶和一个250mL的容量瓶D.可以用右图装置进行*气的...
-
设复数(是虚数单位),则复数的虚部为( )A. B. C. ...
问题详情:设复数(是虚数单位),则复数的虚部为( )A. B. C. D.【回答】B知识点:数系的扩充与复数的引入题型:选择题...
-
下列词语中加点字的读音完全正确的一项是 A.绮丽(qǐ) 祈祷(qí) 既往不咎...
问题详情:下列词语中加点字的读音完全正确的一项是 A.绮丽(qǐ) 祈祷(qí) 既往不咎(jiù) B.翘首(qiáo) 脂肪(zhǐ) 水涨船高(zhànɡ)C.诘责(jié) 鸟瞰(kàn) 首当其冲(zhònɡ) ...
相关文章
- Don'tyoujustloveiceskatingeverywinter?Iamsurethatsincew...
- Don'tyoujustloveiceskatingeverywinter?Iamsurethatsincew...
- Don'tyoujustloveiceskatingeverywinter?Iamsurethatsincew...
- Don'tyoujustloveiceskatingeverywinter?Iamsurethatsincew...
- 短文改错Lastevening,IwenttoateahousewithmybestfriendsSusan....
- ---Thestudentslookverytiredafterthesportsmeeting.---We...
- Youknowyouhavetoread“betweenthelines”togetthemostoutofa...
- “BESTPRODUCTWE'VEEVERSEEN”-THISREALLYWORKS-ONSALENOWNee...
- 完型填空1970wasWorldConservation(保护)Year.Everyonemustknowth...
- Don'tyoujustloveiceskatingeverywinter?Iamsurethatsincew...