he has done it is surprising. he has done is surprising. A. What B. That C. Whether D> / 查看更多

 

題目列表(包括答案和解析)

_____ he has done it is surprising. 

_____ he has done is surprising. 

A. What    B. That    C. Whether    D. If

查看答案和解析>>

閱讀理解

  In a surprising discovery about where higher life can survive, scientists have found a shrimp -like creature and a jellyfish swimming beneath an Antarctic ice sheet.

  About 180 meters below the ice where no light can get through, scientists had figured nothing much more than a few microbes(微生物)could exist.

  That’s why a NASA team was surprised when they lowered a video camera to get the first long look at the underbelly of an ice sheet in Antarctica.A curious shrimp-like creature came swimming by and then parked itself on the camera’s cable.Scientists also pulled up a tentacle(觸須)they believe came from a jellyfish.

  “We were operating on the presumption that nothing’s there.” said NASA ice scientist Robert Bindschadler.“It was a shrimp you’d enjoy having on your plate.”

  “We were just gaga(狂熱的)over it,” he said when talking about the 7.5 cm long, orange creature starring in their two-minute video.Technically, it’s not a shrimp.It’s a Lyssianasid amphipod, which is distantly related to the shrimp.

  The video is likely to inspire experts to rethink what they know about life in harsh environments.And it has scientists thinking that if shrimp-like creatures can live below 180 meters of Antarctic ice in freezing dark water, what about other cold places? What about Europa, a frozen moon of Jupiter?

  Cynan Ellis–Evans, a scientist of the British Antarctic Survey called the finding fascinating.He said it was possible the creatures swam in from far away and don’t live there permanently.

  But Kim, who is a co-author of the study, doubts it.“The site in West Antarctica is at least 19 km from open seas.Bindschadler drilled a 20 cm-wide hole and was looking at a tiny amount of water.That means it’s unlikely that two creatures swam from great distances and were captured randomly in that small area,” she said.

  “Yet scientists were puzzled at what the food source would be for these creatures.While some microbes can make their own food out of chemicals in the ocean, complex life like the shrimp can’t,” Kim said.zxxk

  “So how do they survive? That’s the key question.” Kim said.

  “It’s pretty amazing when you find a huge puzzle like that on a planet where we thought we know everything.” Kim said.

(1)

Scientists had believed that harsh environments could only have been populated by _________.

[  ]

A.

jellyfish

B.

mammals

C.

microbes

D.

shrimp-like creatures

(2)

According to Kim, the shrimp-like creature _________.

[  ]

A.

swam great distances to Antarctic

B.

has always lived in the area

C.

gradually evolved from shrimps

D.

has nothing in common with shrimps

(3)

The finding is significant in that _________.

[  ]

A.

it marks NASA’S first Antarctic biological study

B.

it proves there is marine life in the Antarctic

C.

it could inspire further study of life in harsh environments

D.

it shows that Lyssianasid amphipod is closely related to shrimps

(4)

The last three paragraphs suggest that _________.

[  ]

A.

researchers will look at the places the creatures came from

B.

ice scientists will drill deeper to find more creatures

C.

scientists know very little about the planet they live on

D.

further research will be done about what the creatures live on

查看答案和解析>>

閱讀理解

閱讀下列短文,從每題所給的四個選項(A、B、C、D)中,選出最佳選項。

  Back in the old days, when I was a child, we sat around the family round table at dinner time and exchanged our daily experiences. It wasn't organized, but everyone was recognized and all the news that had to be told was told by each family member.

We listened to each other and the interest was not put on; it was real. Our family was a unit and we supported each other, cared for each other, and liked each other, andwe were even willing to admitwe loved each other.

  Today, the family roundtable has moved to the local fast - food franchise (特權(quán)) and talk is not easy, much less encouraged.

  The working parent is far too beaten down each day to spend evening relaxation time listening to the sandbox experience of an eager four - year- old child.

  So family conversation is no longer in existence and parental questions such as “What have you been doing, Bobby?” have been replaced by “I'm busy, go to watch television.”

  And watch TV as they do?

  But it's usually not children's television that children watch. Saturday morning, the children's hour, amounts to only about 8 percent of their weekly viewing.

  But wait! Where are they to be found? Watching adult television, of course, from the Match Game in the morning, to the afternoon at General Hospital, from the muggings and battles on the evening news right through the family hour and past into Starsky and Hutch. That's where you find our kids, over five million of them, at 10 p.m., not fewer than a million until after midnight! Ad of this is done with parental permission.

  Television, used well, can provide enriching experiences for our young people, but we must use it with some judgement. When the carpet is clean, we turn off the vacuum cleaner. When the dishes are clean, the dishwasher turns itself off.

  It is not the same with the television, which is on from the sun in the morning to the moon at night and beyond!

  Parents must exercise some control and interest themselves in the cultural influence on the child when a program not intended for that child is viewed. Parents need to be intervened (干預). Nonintervention may be a popular policy in international affairs, but the results of parental nonintervention will not be welcome at the United Nations or anywhere else.

1.From the first two paragraphs one may infer that the writer's attitude towards “the old days” is ________.

[  ]

A.hating
B.being tired of
C.surprising
D.prefering

2.The working parent is not willing to listen to her (his) four - year- old child talking about his sandbox games because she (he) is ________.

[  ]

A.very tired
B.busy
C.a(chǎn)ngry
D.boring

3.If we use television with some ________ television can provide our young people with much knowledge.

[  ]

A.judgement of out own
B.background
C.information
D.instruction

4.What is the main idea of the last paragraph?

[  ]

A.Nonintervention may be a good policy in international affairs.

B.Parents must exercise some control and interest themselves in the cultural influence on the children.

C.Parents have rights to intervene.

D.Parental nonintervention will have a bad effect on international affairs

查看答案和解析>>

第三部分:閱讀理解(共15小題,每小題2分,滿分30分).

閱讀下列短文,從每題所給的四個選項(A、B、C和D)中,選出最佳選項。

IN a surprising discovery about where higher life can survive, scientists have found a shrimp-like creature and a jellyfish (水母) swimming beneath an Antarctic ice sheet.

    About 180 meters below the ice where no light can get through, scientists had figured nothing much more than a few microbes (微生物) could exist.

    That’s why a NASA team was surprised when they lowered a video camera to get the first long look at the underbelly (下腹部) of an ice sheet in Antarctica. A curious shrimp-like creature came swimming by and then parked itself on the camera’s cable. Scientists also pulled up a tentacle (觸須) they believe came from a jellyfish.

    “We were operating on the presumption (假定) that nothing’s there,” said NASA ice scientist Robert Bindschadler. “It was a shrimp you’d enjoy having on your plate.”

    “We were just gaga (狂熱的) over it,” he said of the 7.5cm long, orange creature starring in their two-minute video. Technically, it’s not a shrimp. It’s a Lyssianasid amphipod (片腳類動物), which is distantly related to the shrimp.

    The video is likely to inspire experts to rethink what they know about life in harsh (苛刻的) environments. And it has scientists thinking that if shrimp-like creatures can live below 180 meters of Antarctic ice in freezing dark water, what about other cold places? What about Europa, a frozen moon of Jupiter?

    Cynan Ellis-Evans, a scientist of the British Antarctic Survey called the finding intriguing (吸引人的). He said it was possible the creatures swam in from far away and don’t live there permanently.

    But Kim, who is a co-author of the study, doubts it. The site in West Antarctica is at least 19 km from open seas. Bindschadler drilled a 20cm-wide hole and was looking at a tiny amount of water. That means it’s unlikely that two creatures swam from great distances and were captured randomly in that small of an area, she said.

    Yet scientists were puzzled at what the food source would be for these creatures. While some microbes can make their own food out of chemicals in the ocean, complex life like the shrimp can’t, Kim said.

    So how do they survive? That’s the key question, Kim said.

    “It’s pretty amazing when you find a huge puzzle like that on a planet where we thought we know everything,” Kim said.

56. Scientists had believed that harsh environments could only have been populated by ______.

   A. jellyfish      B. mammal    C. microbes      D. shrimp-like creature

57. According to Kim, the shrimp-like creature ______.

   A. swam great distances to Antarctic                 B. has always lived in the region

   C. gradually evolved from shrimp                   D. has nothing in common with shrimp

58. The finding is significant in that ______.

   A. it marks NASA’s first Antarctic biological study

   B. it proves there is marine life in the Antarctic

   C. it could inspire further study of life in harsh environment

   D. it shows that Lyssianasid amphipod is closely related to shrimp

59. The last three paragraphs suggest that ______.

   A. researchers will look at the places the creatures came from

   B. ice scientists will drill deeper to find more creature

   C. scientists know very little about the planet they live on

   D. further research will be done about what the creatures live on

查看答案和解析>>

閱讀理解

  Thanks to depressed markets, investment(投資)banks are reducing many of their highly-paid traders.When markets recover, the banks might be willing to replace them with rather cheaper talent.One alternative has been around for a while but has yet to catch on:autonomous trading agents-computers programmed to act like the human version without such troublesome costs as holidays, lunch breaks.Program trading has been done before; some blamed the 1987 stock market crash on computers instructed with simple decision-making rules.But robots can be smarter than that.

  Dave Cliff, a researcher at Hewlett-Packard Laboratories in Bristol, England, has been creating trading robots for seven years.His simulation(模擬)experiments have suggested that a redesign of some markets could lead to greater efficiency.Last year, a research group at IBM showed that Mr Cliff's artificial traders could unchangeably beat the human variety, in various kinds of market.Nearly all take the shape of an auction(拍賣).One well-known type is the English auction, familiar to customers of the salesrooms of Christie's and Sotheby's where sellers keep silent on their offer price, and buyers increase their bids by stages until only one remains.

  At the other extreme is the Dutch auction, familiar to traders in the Netherlands as well as to bidders for American Treasury bonds.Here, buyers remain silent, and a seller reduces his price until it is accepted.Most markets for shares are a mixture of these two types:buyers and sellers can announce their bid or offer prices at any time, and deals are constantly being closed, a so-called “continuous double auction”.

  Mr Cliff's new idea was to apply his evolutionary computer programs to market places themselves.Why not, he thought, try and see what types of auction would let traders converge(趨于達成一致)most quickly towards a balance price? The results were surprising.In his models, auctions that let buyers and sellers bid at any time like most of today's financial exchanges were less efficient than ones that required relatively more bids from either buyers or sellers.These “evolved(演變的)auctions” also withstood(經(jīng)得起)big market shocks, such as crashes and panics, better than today's real-world versions.

  Bank of America has been investigating these new auctions, along with robotic traders, for possible use in electronic exchanges.The hope is that today's financial auctions and online market places might work better by becoming more like their English and Dutch forebears.

(1)

The passage is mainly ________.

[  ]

A.

a review of two kinds of auctions

B.

an introduction of trading robots

C.

a survey of the trading market

D.

about trading alternatives

(2)

Which of the following is true according to the passage?

[  ]

A.

David's robot traders have now been used in real-world markets.

B.

Robot traders can change like creatures.

C.

There is room for improvement in efficiency in trading markets.

D.

The English auction is the most popular trading form.

(3)

We can infer from the passage that ________.

[  ]

A.

existing auctions can not withstand market shocks

B.

the Dutch auction is better than the continuous double auction

C.

it's hard for traders to reach an equilibrium price

D.

the best type of auction takes place when the number of the buyers is equal to that of sellers

(4)

The passage was written in a(an)________ tune.

[  ]

A.

worried

B.

objective

C.

hesitant

D.

optimistic

查看答案和解析>>


同步練習冊答案