C

Mars( 火星) appears to be flowing with small streams of salty water, at least in the summer, scientists reported Monday．"It suggests that．it would be possible for there to be life today on Mars," NASA's science mission chief, John Grunsfeld, said at a news conference on September 28, 2015．

The streams are about 12 to 15 feet wide and 300 feet or more long, scientists said．"What we're dealing with is wet soil．thin layers of wet soil, not standing water," said Aifred McEwen of the University of Arizona at Tueson ! the principal scientist for the Mars Reconnaissance Orbiter's high-resolution imaging experiment．

Because liquid water is essential to life, the findings could have major implications for the possibility of Martian life．The researchers said further exploration is needed to determine whether microscopic life exists on the planet．

The presence of liquid water could also make life easier for astronauts visiting or

living on Mars．Water could be used for drinking and for creating oxygen and rocket

fuel．NASA's goal is to send humans there in the 2030s．

The evidence of flowing water consists largely of dark, narrow streaks(條痕) on

the surface that tend to appear and grow during the warmest Martian months and fade

the rest of the year．

Mars is extremely cold even in summer, and the streaks are in places where the

temperature is as low as minus 10 degrees Fahrenheit．But salt can lower the freezing point of water and melt ice．

The source of the water is a mystery．Scientists noted it could be melting

ice．It could be an underground aquifer, which is rock or sand that can hold water．It is possibly water vapor from the thin Martian atmosphere, Or it may be a combination Michael Meyer, lead scientist for NASA's Mars exploration program, said the only definitive way for now to determine whether there's life on Mars is to collect rocks and soil for analysis on Earth - something a U．S．lander set for lift-off in 2020 will do．

1.What would be the best title for the text? '

A．Streams of Water Spotted on Mars

B．Astronauts will Land on Mars

C．NASA's Mars Exploration Program

D．A Breakthrough in the Exploration of Mars

2.According to John Grunsfeld, there seems to be on Mars．

A．salty water

B．standing water

C．rocket fuel

D．human beings

3.Scientists are uncertain about the of the water on Mars．

A．state

B．source

C．temperature

D．taste

4.What matters to the existence of liquid water on Mars?

A．The distance from the sun．

B．The favorable climate．

C．The gravity of the earth

D．The salt in it．

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短文改錯（共1小題）

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2．只允許修改10處，多者（從第11處起）不計分。

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閱讀理解。閱讀下列短文, 從給的四個選項 (A、B、C和D) 中, 選出最佳選項。

A man was working on his motorcycle in his yard.Suddenly it started to move.The man，still holding the hand lebars，was dragged through the glass doors，along with the motorcycle，and was thrown onto the floor inside the house.The wife ran in and found her husband lying on the floor，cut and bleeding.She ran to call an ambulance (救護(hù)車)．

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1.What most probably made the motorcycle start moving?

A．The man himself started it to see if it was working.

B．His wife did it for him to check if there was something working.

C．The motorcycle started by itself.

D．The man started the motorcycle without knowing it.

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A．She did nothing except calling the policemen.

B．She cleaned the gas with paper towels and threw them into the toilet.

C．She took the motorcycle and pushed it into the room.

D．She took her hushand to the hospital.

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B．The gas was of poor quality.

C．The gas made the hushand suffer 4 accidents in a day.

D．The gas should have burned the wife.

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A．What a Bad Day for the Husband and Wife

B．A Man’s Worst Day

C．A Man Had Three Accidents in One Day

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The poaching，or illegal killing，of rhinos(犀牛) in South Africa is growing worse each year．The government recently reported that a record number of rhinos were poached in 2014，a year which had more rhino killings in South Africa than ever before．

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The animals are hunted for their horns(犀牛角)．Many people in Asia believe the horn has curing power，which drives poachers，at all costs，mad for more horns．But there is no scientific evidence for this belief．The horn is made of keratin．That is the same thing as human hair， fingernails and toenails．

Ms．Mo1ewa said 386 suspected poachers were arrested last year，an increase from the year before．But rhino protection workers say poachers often go unpunished after arrest．South Africa’s legal system is ineffective．Ms．Molewa said more needs to be done and South Africa is taking strong measures to protect rhinos．The efforts include moving some of the animals to secret places in neighboring countries．“Now approximately 100 rhinos have been moved to neighboring states in the SADC region during 2014 and 200 more rhinos will be moved this year”Molewa said．

Jo Shaw，the rhino program manager at the WWF，said，“we’re talking about a loss of a hundred rhinos a month．Or more than three a day．We really need to see effective action not just at a national level but internationally．”She says officials should find the criminal groups responsible for the poaching and punish them．Government officials are to meet in Botswana in March at the Inter-governmental Conference on Illegal Wildlife Trade．

1.What do we know about rhinos?

A．Half of the rhinos live in South Africa．

B．Less than 1，000 rhinos were killed in 2013．

C．The killing reached the highest point in 2014．

D．There are only 20，000 rhinos left in the world．

2.What is the main reason for people to hunt rhinos?

A．To get more keratin．

B．To protect the farmland．

C．To use them for decoration．

D．To make money from horns．

3.Jo Shaw thinks that_________．

A．many criminal groups are well organized

B．new laws are needed to punish the killers

C．rhino protection needs international cooperation

D．conferences about protecting rhinos are to be held every year

4.What can we infer from the text?

A．Rhino protection has a long way to go．

B．No one would like to buy horns in the future．

C．The illegal killing of rhinos will soon disappear．

D．Rhinos living in South Africa will move to other countries．

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完形填空

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The opening and closing of doors are the most significant actions of man’s life. What a lies in doors!

No man knows what awaits him when he opens a door. the most familiar room, where the clock ticks and the hearth glows red at dusk may harbor .The worker may actually have called and the leaking pipe. The cook may have been ill and demanded her passport.

There are many kinds of doors. Revolving doors for hotels, shops and public buildings. There are many the busy, bustling ways of modern life. Can you William Shakespeare or Charles Dickens skipping through a door? There are double doors, sliding doors, stage doors and glass doors. The and mystery of a door lies in its quality of being hidden. A glass door is not a door at all, but a window. The meaning of a door is to what lies inside; to keep the heart in suspense.

Also, there are many ways of opening doors. There is the cheery of elbow with which the waiter opens the kitchen door. There is the sympathetic and awful of the dentist’s maid who opens the door into the operating room and, without speaking, that the doctor is ready for you.

The opening of doors has in it some flavor of the , some sense of moving into a new moment. Even in , the opening of a door may bring relief. But the closing of doors could be , A door closed brings to an end. And there are degrees of sadness in the closing of doors. A door slammed is a confession of weakness. A door shut may often be the most tragic gesture in life.

The opening and closing of doors is a part of the serious fluency of life. Life will not stay and let us alone. We are opening doors with hope, closing them with despair. Life not much longer than a pipe of tobacco, and destiny knocks us out like the ashes.

1.A. mystery B. relief C. scenery D. pleasure

2.A. So B. Still C. Even D. Also

3.A. wishes B. puzzles C. surprises D. changes

4.A. checked B. fixed C. wrapped D. removed

5.A. essential to B. different from C. consistent with D. typical of

6.A. imagine B. suggest C. catch D. notice

7.A. stage B. sliding C. glass D. revolving

8.A. symbol B. miracle C. sign D. mark

9.A. busy B. hide C. discover D. exhibit

10.A. knock B. bump C. push D. touch

11.A. silence B. noise C. voice D. peace

12.A.announce B. admits C. implies D. expects

13.A. darkness B. certainty C. possibility D. unknown

14.A.vain B. hope C. sadness D. happiness

15.A.easy B. terrible C. dull D. interesting

16.A. nothing B. everything C. anything D. something

17.A. heavily B. hurriedly C. gently D. firmly

18.A.still B. calm C. silent D. simple

19.A.naturally B. continually C. obviously D. possibly

20.A.measures B. matches C. reaches D. lasts

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