A group of swans flew down to a beach where a crow(乌鸦)was jumping around．The crow watched them with disdain(鄙视)．
“You have no flying skills at all!” he said to the swans．“All you can do is to move your wings．Can you turn over in the air? No, that's beyond you．Let's have a flying competition．I'll show you what real flying is!”
One of the swans, a strong young male, took up the challenge．The crow flew up and began to show his skills．He flew in circles, performed other flying tricks, and then came down and looked proudly at the swan．
Now it was the swan's turn．He flew up, and began flying over the sea．The crow flew after him, making all kinds of comments(评价)about his flying．They flew on and on till they couldn't see the land and there was nothing but water on all sides．The crow was making fewer and fewer comments．He was now so exhausted that he found it hard to stay in the air, and had to struggle to keep himself from falling into the water．
The swan pretended(假装)not to notice, and said, “Why do you keep touching the water, brother? Is that another trick?”
“No,” said the crow．He knew he had lost the competition．“I'm in trouble because of my pride! If you don't help me, I'll lose my life…”
The swan took pity on him, and took him on his shoulders and flew back to the beach．
(1)
What's the correct order of the following events?
a．The crow showed off its flying skills．
b．The swan felt pity for the crow and saved it．
c．The crow laughed at the swan's flying．
d．The crow followed the swan and got into trouble．
e．The crow challenged the swans and a strong young swan accepted it．
[ ]
A．
e, c, d, a, b
B．
a, e, c, d, b
C．
c, e, a, d, b
D．
e, a, d, c, b
(2)
What does the underlined word “exhausted” in Paragraph 4 mean?
[ ]
A．
Tired．
B．
Angry．
C．
Frightened．
D．
Regretful．
(3)
Why did the crow keep touching the water?
[ ]
A．
It was showing another flying skill．
B．
It was struggling to keep itself from falling into the water．
C．
It was thirsty and wanted to drink some water．
D．
It was enjoying itself by doing so．
(4)
What can we infer(推断)from the passage?
[ ]
A．
The crow didn't know flying．
B．
Flying skills were useless．
C．
The swan saved the crow because they were good friends．
D．
The swan was better at long-distance flying than the crow．
After spending years searching for a planet with life, scientists may have found one．In September 2010, a team of US scientists discovered an Earth-sized planet called Gliese 581 g．It has a surface temperature neither too hot nor too cold for liquid(液态)water．Scientists think there is a chance that the planet could have life．
The planet Gliese 581 g goes around a star called Gliese 581, which is about 20 light-years from Earth．That is about 194 trillion(万亿)kilometres－500 million times farther away from us than the moon．
A spacecraft traveling at a one-tenth of the speed of light would reach Gliese 581g within about 220 years．A human can’t live that long, but robotic explorers could make the job easier．However, our fastest spacecraft don’t come anywhere near that one-tenth light-speed mark．
At present, scientists don’t know what the surface might be like on Gliese 581 g．What they know is that the planet is at the sight distance from its star to have liquid water．It’s also at the right distance to have an atmosphere that could protect the water if it is on the surface．
Although spacecraft won’t be getting there anytime soon, one way to look for life on Gliese 581g is to turn our radio telescopes(望远镜)towards the planet and search for radiation(放射)．By studying the radiation, scientists would find out about the chemicals(化学物质)around the planet and discover it Gliese 581 g has an atmosphere．If it has one, studying the atmosphere would give us a good idea if the planet has life or not．But it’ll probably be many years before we can do this properly．
People have been arguing about whether there is alien life on Gliese 581 g．Any discussion about alien life is just guessing at this point, according to its discoverers．
(1)
What did scientists find in September 2010?
[ ]
A．
A planet with water．
B．
A planet similar to the earth．
C．
A planet without life．
D．
A planet near the earth．
(2)
According to the article, Gliese 581 g _________．
[ ]
A．
is at the right distance from its star
B．
moves around the earth
C．
is as far away from us as the moon
D．
can be reached in about 220 years
(3)
Paragraph 5 is mainly about _________．
[ ]
A．
the possibility of living on Gliese 581 g
B．
the kinds of chemicals around Gliese 581 g
C．
the way of looking for life on Gliese 581 g
D．
the aim of studying the radiation on Gliese 581 g
(4)
Which of the following is the best title for the passage above?
七星图书口算速算天天练系列答案