像生命一样宝贵 as dear to me as life——青夏教育精英家教网—

摘要：像生命一样宝贵 as dear to me as life

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补全句子

Though he was ill, he went to school _________　_________(像往常一样)

阅读理解

　　When Geoff Marcy was 14, his parents bought him a telescope. Every night, he would go onto the roof outside his window to see the wonders of the sky.

　　“What excited me most was whether there were planets in other solar systems where life might exist,” he says. “I decided to try to find planets orbiting (沿……轨道运行) other stars like our Sun.” And he did. “My fellow researcher, Paul Butler, and I found our first planet in 1995,”Dr. Marcy says. “We worked for ten years without finding anything! But we stuck with it, and our patience paid off.”

　　Since then, the two scientists have discovered 65 of the more than 100 planets found orbiting other stars. Dr. Marcy and Dr. Butler also spotted the first “family” of three planets. In June 2002 they announced another discovery: a Jupiter-like (像木星一样的) planet orbiting star 55 Cancri.

　　At first, the two researchers found only planets that orbit close to stars. Recently, the scientists found planets farther out. The planet orbiting 55 Cancri is a major breakthrough: it is the first sighting of a large gas planet about the same distance from the star as Jupiter is from the Sun.

　　Why is this important? Scientists think that life on Earth may exist because of two special features in our solar system. The first is Jupiter. “Because it's so big, Jupiter pulls comets and asteroids(小行星), or they all come and hit the Earth.”Dr. Marcy explains. “Without Jupiter, life on Earth would likely have been destroyed.”

　　A second feature is that Earth is a rocky planet where liquid water, which is necessary for life, can exist. Unlike gas planets, rocky planets like Earth have surfaces where water can gather in pools and seas, which may support life. A huge space exists between the Jupiter-like planet and two other planets that lie close to 55 Cancri. Is there an Earth-like planet in the space, too small for us to notice? If so, says Dr. Marcy, “We would have two striking similarities to our solar system: a Jupiter-like planet and an Earth-like planet. And there may be life!”

1．What can we learn about Dr. Marcy from the passage?

[　　]

A．He is fond of watching Jupiter.

B．He is from a scientist family.

C．He dislikes working with Paul Butler.

D．He is interested in finding life in outer space.

2．Which of the following is true of the recent discovery?

[　　]

A．The planet is not as protective as Jupiter.

B．The planet is close to star 55 Cancri.

C．The planet proves to be a gas planet.

D．The planet is as large as Jupiter.

3．How many planets orbiting other stars have the two scientists discovered so far?

[　　]

4．Dr. Marcy thinks that life may exist in the 55 Cancri system because ________.

[　　]

A．he has found the system similar to the solar system

B．he has discovered an Earth-like planet there

C．he has discovered a rocky planet there

D．he has found signs of life in the system

5．“But we stuck with it”(in Paragraph 3) means ________.

[　　]

A．they felt discouraged

B．they carried on with it

C．they failed in their attempt

D．they made some progress

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阅读理解

　　More than 3 million years ago, our ancestors(祖先)were already on the march, rising on two legs to search for food, seek greener lands and, above all, to grow in body and brain．Let’s meet some of them：

　　1．Australopithecus afarensis：

　　They had apelike(像猿一样的)faces and their brains were a third the size of modern humans’ brains．They lived in 3.9 million years ago．Fossils(化石)were found in Ethiopia(埃塞俄比亚)in 1974．

　　2．Paranthropus boisei：

　　Covered with fur, they had strong arms and gorilla-like(像大猩猩一样的)faces．They lived 1－2.5 million years ago．Fossils were found in Tanzania(坦桑尼亚)in 1959．

　　3．Homo habilis：

　　Homo habilis, which actually means “handy man”, was the first species to make and use primitive^⑨ stone tools．They lived 1.6－2.2 million years ago．Fossils were found in Tanzania in 1960．

　　4．Homo erectus：

　　With skeletons(骨骼)very similar^⑩ to those of modern humans, they were probably the first to use fire．They lived 30 000－1.8 million years ago．Fossils have been found in Africa and Asia since 1893．

　　5．Homo heidelbergensis：

　　They were skilled hunters who used spears to kill animals．Their bodies were similar to ours, although more muscular(肌肉发达的)and larger boned．They lived 200 000-500 000 years ago．Fossils have been found in Ethiopia, Germany, France and Spain since 1921．

　　6．Homo Neanderthal：

　　Their brains were at least as large as the average modern humans’, while their smaller bodies helped them deal with cold climates．They lived 30 000-230 000 years ago．Fossils have been found in France and Iraq since 1856．

(1)

What is considered more important in the development of the human?
[　　]
A．	Man could stand on two feet．
B．	Man’s brain became big enough．
C．	Man’s arms became strong．
D．	Man could use the stone tools．

(2)

Handy man’s fossils were found in ________．
[　　]
A．	Tanzania in 1960
B．	Germany in 1921
C．	France in 1856
D．	Tanzania in 1959

(3)

Which of the following lived earliest on the earth?
[　　]
A．	Homo Neanderthal．
B．	Homo habilis．
C．	Paranthropus boisei．
D．	Australopithecus afarensis．

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阅读理解

Planet Hunter

　　When Geoff Marcy was 14, his parents bought him a telescope．Every night, he would go onto the roof outside his window to see the wonders of the sky．

　　“What excited me most was whether there were planets in other solar systems where life might exist,”he says．“I decided to try to find planets orbiting(沿…轨道运行)other stars like our Sun．”

　　And he did．“My fellow researcher, Paul Butler, and I found our first planet in 1995,”Dr．Marcy says．“We worked for ten years without finding anything!But we stuck with it, and our patience paid off．”

　　Since then, the two scientists have discovered 65 of the more than 100 planets orbiting other stars．Dr．Marcy and Dr．Butler also spotted the first“family”of three planets．In June 2002 they announced another discovery：a Jupiter-like(像木星一样的)planet orbiting star 55 Cancri．

　　At first, the two researchers found only planets that orbit close to stars．Recently, the scientists found planets farther out．The planet orbiting 55 Cancri is a major breakthrough：it is the first sighting of a large gas planet about the same distance from the star as Jupiter is from the Sun．

　　Why is this important?Scientists think that life on Earth may exist because of two special features in our solar system．The first is Jupiter．

　　“Because it’s so big, Jupiter pulls comets and asteroids(小行星), or they all come and hit the Earth．”Dr．Marcy explains．“Without Jupiter, life on Earth would likely have been destroyed．”

　　A second feature is that Earth is a rocky planet where liquid water, which is necessary for life, can exist．Unlike gas planets, rocky planets like Earth have surfaces where water can gather in pools and seas, which may support life．A huge space exists between the Jupiter-like planet and two other planets that lie close to 55 Cancri．Is there an Earthlike planet in the space, too small for us to notice?If so, says Dr．Marcy,“We would have two striking similarities to our solar system：a Jupiter-like planet and an Earth-like planet．And there may be life!”

(1)

What can we learn about Dr．Marcy from the passage?
[　　]
A．	He is found of watching Jupiter．
B．	He is from a scientist family．
C．	He dislikes working with Paul Butler．
D．	He is interested in finding life in outer space．

(2)

Which of the following is true of the recent discovery?
[　　]
A．	The planet is not as protective as Jupiter．
B．	The planet is close star 55 Cancri．
C．	The planet proves to be a gas planet．
D．	The planet is as large as Jupiter．

(3)

Dr．Marcy thinks that life may exist in the 55 Cancri system because ________．
[　　]
A．	he has found the system similar to the solar system
B．	he has discovered an Earth-like planet there
C．	he has discovered a rocky planet there
D．	he has found signs of life in the system

(4)

“But we stuck with it”(in Paragraph 3)means ________．
[　　]
A．	they felt discouraged
B．	they carried on with it
C．	they failed in their attempt
D．	they made some progress

查看习题详情和答案>>

阅读理解

Planet Hunter

　　When Geoff Marcy was 14, his parents bought him a telescope. Every night, he would go onto the roof outside his window to see the wonders of the sky.

　　“What excited me most was whether there were planets(行星) in other solar(太阳的) systems where life might exist,” he says. “I decided to try to find planets orbiting(沿……轨道运行) other stars like our Sun.” And he did. “My fellow researcher, Paul Butler, and I found our first planet in 1995,” Dr. Marcy says. “We worked for ten years without finding anything! But we stuck with it, and our patience paid off.”Since then, the two scientists have discovered 65 of the more than 100 planets found orbiting other stars. Dr. Marcy and Dr. Butler also spotted the first “family” of three planets. In June 2002 they announced another discovery; a Jupiter-like(像木星一样的) planet orbiting star 55 Cancri.

　　At first, the two researchers found only planets that orbit close to stars. Recently, the scientists found planets farther out. The planet orbiting 55 Cancri is a major breakthrough; it is the first sighting of a large gas planet about the same distance from the star as Jupiter is from the Sun.

　　Why is this important? Scientists think that life on Earth may exist because of two special features(特征) in our solar system The first is Jupiter.

　　“Because it's so big, Jupiter pulls comets and asteroids(小行星), or they all come and hit the Earth.” Dr. Marcy explains. “Without Jupiter, life on Earth would likely have been destroyed.”

1．What can we learn about Dr. Marcy from the passage?

[　　]

A．He is fond of watching Jupiter.

B．He is from a scientist family.

C．He dislikes working with Paul Butler.

D．He is interested in finding life in outer space.

2．Which of the following is true of the recent discovery?

[　　]

A．The planet is not as protective as Jupiter.

B．The planet is close to star 55 Cancri.

C．The planet proves to be a gas planet.

D．The planet is as large as Jupiter.