Rocket was probably by accident about 2000 years ago．题目和参考答案——青夏教育精英家教网——

题目内容

Rocket was probably ____________________ (发明)by accident about 2000 years ago．

invented

练习册系列答案

西城学科专项测试系列答案

小考必做系列答案

小考实战系列答案

小考复习精要系列答案

小考总动员系列答案

小升初必备冲刺48天系列答案

68所名校图书小升初高分夺冠真卷系列答案

伴你成长周周练月月测系列答案

小升初金卷导练系列答案

萌齐小升初强化模拟训练系列答案

相关题目

------ you got the news that the rocket was sent up successfully?

------From the radio.

　 A. How was it that　　　 B. How it was that

　 C. What was it that　　　 D. What it was that

… you got the news that the rocket was sent up successfully?

……From the radio.

A. How was it that B. How it was that C. What was it that D. What it was that

     An American space company says a powerful new rocket should be ready for a test launch by the
end of 2012. The company is Space Exploration Technologies, or SpaceX. Its new rocket is called the
Falcon Heavy.
     Company officials say it'll be able to transport satellites or spacecraft weighing up to 53 metric tons
into orbit. Fiftythree metric tons is 117,000 pounds. That load weight is double the capacity of NASA
space shuttles. The space agency is retiring its shuttles after thirty years.
     Elon Musk is the chief executive officer of SpaceX. He says the Falcon Heavy will be the second
most powerful rocket ever. He says it was designed to carry satellites and other equipment into space.
He says the rocket was designed to meet NASA's ratings for human flight safety. So it could someday
be used to carry astronauts and other travelers into space.
     Mr. Musk says the Falcon Heavy could also be used for missions(任务) like carrying a robotic lander
to collect samples from Mars. He says, "It has so much more capability than any other vehicle that I think we can start to consider missions like a Mars sample return, which requires a tremendous amount of lift
capability because you've got to send a lander to Mars that still has enough propellant(推进物) to return
to Earth."
     The first launch is planned from the company’s launch site at Vandenberg Air Force Base in California. A launch from Cape Canaveral, Florida, is expected in late 2013 or 2014.
     In time, SpaceX hopes to launch ten Falcon Heavy rockets a year. It says the rocket should cut back
on launch costs to about 2,000 dollars a kilogram.
     SpaceX already has a billionandahalfdollar deal with NASA to use a smaller rocket to transport
cargo(货物) to the International Space Station. The rocket is the Falcon 9, and the deal is for after the
two last shuttles-Endeavour and Atlantis-are retired this year.
1. What do we know about the feature of the new rocket from the second paragraph?
(No more than 11 words)
________________________________________________________________________
2. Why did SpaceX want to design the new rocket？(No more than 16 words)
________________________________________________________________________
3. Why can the new rocket be used to carry a robotic lander to collect samples from Mars?
(No more 6 words)
________________________________________________________________________
4. What will SpaceX do for the NASA after Endeavour and Atlantis are retired?
(No more than 14 words)
________________________________________________________________________

1．Are there any ______________ （相似处） between the two?

2．Athens is known as the birthplace of western __________________ （文明）.

3．There was a _______________ （可能性） that a huge tidal wave would flood half the island.

4．There seems to be a highly _______________ （感染性的） type of flu going round.

5．No one knows what the city of the future will look like and making ______________ （预测） is a risky business.

6． _____________ （出口） to many countries, the cotton goods produced by this factory has a wide variety of consumers.

7．As the cars come into the centre, video cameras record their _______________ （登记） numbers, and these are checked with a list of drivers who have paid the charge for that day.

8．______________ （包括; 卷入） in the case unexpectedly, the man felt upset and hopeless.

9．The Chinese discovered that the gas ______________ （逃脱; 漏气） from the tube could lift it into the air. The idea of the rocket was born.

10．The architect is ________________ （乐观的） about the effect of the house on the environment.

—________ you got the news that the rocket was sent up successfully?

—From the radio.

A．How was it that

B．How it was that

C．What was it that

D．What it was that