But it was not until 250 years later that they formed a single state. 查看更多

 

题目列表(包括答案和解析)

根据对话情景和内容,从对话后所给的选项中选出能填入每一空白处的最佳选项,并在答题卡上将该选项涂黑.选项中有两个为多余选项

W: Why don’t we go to a movie tonight?

M: __1.___ I have to study.

W: But it is just a couple of hours.

M: No. ___2.__ I have no choice. I have to study.

W: Can I help you?

M: I don’t think so.___ 3.__ Then I have to read 20pages of my grammar book.

W: Oh, your teacher must be a monster to give you all that work!

M: __4.   . He told us about the test three weeks ago.__ 5.  

     A. First I have to memorize some irregular verbs

B. My teacher is always giving us much homework.

C. I’d like to, but I can’t

D. I have been watching football matches and I have to study day and night!

E. I’d like to.

F. I have a French test tomorrow morning.

G. No, It’s my fault.

 

查看答案和解析>>

完型填空

  Have you ever imagined that you could be cloned like Dolly the sheep in the not too distant future?

  The news that a human embryo (胚胎) has been 1 cloned for the first time has caused mixed reactions (反映).

  The 2 was carried out by scientists from the Advanced Cell Technology Inc (ACT), in Massachusetts, US. The group 3 the news on November 25.

  “This is 4 human being. A clone is alive, it walks, it breathes,” said Jamie Grifo, 5 on the study of cloning at New York University School of Medicine.

  “This is a set of cells in a lab that will be used to 6 someone's life. ”

  Such research could lead to treatment for 7 such as heart diseases, AIDS and even cancer, 8 scientists.

  Despite high hopes from other scientists, the news raised concerns immediately from religious and political leaders. Several 9 in the US do not allow human cloning. President George W. Bush also made it clear that he is 10  any type of human cloning. However, the scientists at ACT said they have no interest at present in 11 an early embryo into __12__.

  Animals have been cloned repeatedly since Dolly the sheep 13 in 1997. And there were no real technical 14 to stand in the way of scientists making a cloned human embryo.

  This time the research group used traditional cloning technology with a human 15

   16 it was given DNA from an adult cell, the egg began to __17__.__18__ it was stopped from becoming a baby--at a stage in which it was 19 a ball of cells. The 20 technology has been used to clone sheep, cattle and monkeys.

(1)

[  ]

A. in failure
B. never
C. successfully
D. not

(2)

[  ]

A. research
B. report
C. works
D. task

(3)

[  ]

A. made known
B. made
C. said
D. had

(4)

[  ]

A. a cloned
B. a man-made
C. a
D. not a cloned

(5)

[  ]

A. a worker
B. a head
C. an expert
D. an assistant

(6)

[  ]

A. save
B. rescue
C. cure
D. treat

(7)

[  ]

A. patients
B. health
C. diseases
D. things

(8)

[  ]

A. according to

B. including

C. besides

D. argued

(9)

[  ]

A. countries
B. nations
C. peoples
D. states

(10)

[  ]

A. for
B. against
C. researching for
D. praising

(11)

[  ]

A. developing

B. building

C. inventing

D. discovering

(12)

[  ]

A. a baby
B. a man
C. a woman
D. a white man

(13)

[  ]

A. died
B. appeared
C. turned up
D. was no more

(14)

[  ]

A. questions
B. affairs
C. business
D. problems

(15)

[  ]

A. egg
B. bless
C. meat
D. cell

(16)

[  ]

A. Before
B. After
C. While
D. And

(17)

[  ]

A. grow
B. die
C. change
D. grow up

(18)

[  ]

A. And
B. But
C. However
D. Yet

(19)

[  ]

A. yet
B. still
C. not
D. no

(20)

[  ]

A. different
B. usual
C. ordinary
D. same

查看答案和解析>>


B
  Although man has known asbestos for many hundreds of years, it was not until 160 years ago that it was mined for the first time on the North American continent. H. W. Johns, owner of a New York City Supply Shop for roofers, was responsible for he opening of that first mine.
  Mr. Johns was given a piece of asbestos which had been found in Italy. He experimented with the material and then showed its surprising powers to his customers. After putting on a pair of asbestos gloves, which looked much like ordinary work gloves, he took red-hot coals from the fireplace and played with them in his hands. How astonished the customers were to discover that he was not burned at all. You can well imagine that he had increasing business in asbestos roofing materials. However, because it was very expensive to transport them from Italy to the United States, Mr. Johns sent out a young scientist to seek a source nearer home. This young man found great vein in the province of Quebec in Canada.
  Ever since 1881 Quebec has led the world in the production of this unusual mineral, which is made up of magnesium, silicon, iron, and oxygen. When it is mined, the asbestos is heavy, just as you would expect a mineral to be. When it is separated, a strange thing happens; the rock breaks down into fine, soft, soapy fibers .
  Scientists do not know why the rock can be separated easily into threads,but they have found thousands of uses of this fireproof material, of the so-called “cloth of stone”.
 60. Which title best expresses the main idea of this passage?
    A. Asbestos mined in Canada                  B. Fireproof matter
C. A “wonder” mineral                           D. A new roofing material
 61. Johns proved his ability as a salesman by_______.
    A. going into roofing business              
B. carrying asbestos from Italy
    C. sending a trained scientist                 
D. showing the use of asbestos gloves
 62. Which is the most important character of asbestos that the author wants to show us?
    A. It is like thread.                               B. It feels soapy.
C. It burns easily.                                 D. It is unusually heavy.
 63. The author’s main purpose in writing this passage was to _______.
    A. show the need for more scientists
    B. compare asbestos with other minerals
    C. increase the sales of asbestos
    D. present facts about asbestos

查看答案和解析>>

对话填空

M:Hi, Jane.It’s nice to see you again.I heard that you went to the US during the v  1  

W:Yes.I went to New York to attend a summer c  2   in English.

M:Wow.You were l  3  .How long did you stay there?

W:About 50 days.I went there on July 5th and came back on A  4   25th.

M:How about the course?

W:The course was very good.The teachers were nice.They taught us to listen, speak, read and write in English, but it was mostly s  5  .One interesting thing I found was that the American classes are different from o  6   here because the students have a lot more f  7   and s  8  .You can sit anywhere you like in the classroom.You can ask the teachers questions at any time during the class, and you are welcome to s  9   your ideas with the class.I really like this kind of class.

M:How interesting! Maybe our teachers should t  10   that.

查看答案和解析>>

请认真阅读下面对话,并根据各题所给首字母的提示,写出一个英语单词的完整、正确形式,使对话通顺。

M=Mary

T=Tom

M:  Hi, I'm going door to door tonight to tell people about the Student Action Union.

T:  I think I read something in the (76)n       last week.

M:  Yeah, we are trying to (77) p       and preserve some of the open spaces on campus.

T:  You are the group that's (78) a    against the extension of the parking lot next to Darwin Hall,

    right?

M:  That's us. We just feel it is important to save some of the (79) n       beauty of the campus.

    Some of those trees are hundreds of years old.

T:  It's a pretty (80) p       . My friends and I had picnics over there by the stream.

M:  We are going to (81) o     a demonstration on Thursday afternoon.

T:  Well, I have a class on Thursday afternoon.

M: But maybe you could (82) s     this appeal letter. We are going to hand it in to the administration

    to demonstrate how the students feel about this.

T:  Sure, let me get a pen.

M:  I have a pen right here. And let me (83) l        you this little book about the Student Action

    Union. Maybe you could come to some of our meetings. We get (84) t     once a month.

T:  Yeah, I'd like to know more about your group. Let me know (85) w      the next meeting is and I

    will try to be there.

 

查看答案和解析>>


同步练习册答案