相关习题
 0  19266  19274  19280  19284  19290  19292  19296  19302  19304  19310  19316  19320  19322  19326  19332  19334  19340  19344  19346  19350  19352  19356  19358  19360  19361  19362  19364  19365  19366  19368  19370  19374  19376  19380  19382  19386  19392  19394  19400  19404  19406  19410  19416  19422  19424  19430  19434  19436  19442  19446  19452  19460  151629 

科目: 来源: 题型:

Though she has achieved great success, she has never felt ___ with it.

A. proud   B. content   C. learned   D.disappointed

查看答案和解析>>

科目: 来源: 题型:

----Any news about Bill Clinton?

   ----He left power three years ago and has a little now and a little then been ______.

   A.heard of since       B.heard since                C.heard before                     D.heard of before

查看答案和解析>>

科目: 来源: 题型:阅读理解

All plant cells are able to take up water. Even dead ones do to a certain degree. Absorption of water by dead cell walls makes wood swell(肿胀). In common land plants, the living cells of roots take up most of the water. Land plants without roots do exist, however. Those greenish-yellow lichens(苔藓)you see on tree trunks and on rocks in the high mountains have no roots. Half a billion years ago, when water plant started to invade the land, the first primitive land plants did not have roots; they were marsh (沼泽) plants.

Even among the flowering plants, one finds rootless forms. These flowering plants are the so-called higher plants because they evolved more recently and are thus considered higher on the evolutionary scale. In the Peruvian desert, there grows one of these rootless higher plants, a bromeliad. It is a relative of the pineapple. Even if this plant had roots, they would be of no use, because where the plant grows, it never rains. The plant gets its water exclusively from the dew it collects at night, when its leaves cool off. Such rootless plants, of course, can be moved with ease, but they will only grow when they are placed out in the open. If they are placed too near a house, the radiation from the heat of the house prevents the leaves from cooling and so prevents dew from forming, and the plant dies. In the southern United States and in Puerto Rico, one sees bromeliads growing high above the streets on the insulation of electric wires. These plants get their water from rain, and the only soil they ever come in contact with is the dust that may blow on their leaves.

Wood swells because of _______.

A. the dead cell walls          B. tiny drops of water entering the dead cell

C. the growth of the cell       D. the death of the cell

From the passage we know that the evolutionary scale is arranged according to ______.

A. evolutionary cycles                  B. heights and depths

C. time                                D. kinds

The bromeliad is a plant that _______.

A. has useless roots             B. is a pineapple

C. can grow anywhere           D. takes up water through its leaves

Which of the following is NOT true?

Water plants existed before land plants.

Only living plant cells take up water.

The greenish-yellow lichens are uncommon land plants.

The living cells of roots absorb more water than the rest of the plant.

The most suitable title for this passage is ______.

A. water intake by cells  B. rootless plantsC. plant in the desert   D. higher plants

查看答案和解析>>

科目: 来源: 题型:

--- It’s a long time ____ I saw you last.

      --- Yes, and what a pity. It will be a long time ____ we see each other again.

A. before; since

B. since; before

C. when; when                   

D. since; when

查看答案和解析>>

科目: 来源: 题型:

______ Wang Mei, two girs in our class took part in 1,500-meter race and she won the first.

A. Except   B. Except for    C. Besides    D. Beside

查看答案和解析>>

科目: 来源: 题型:阅读理解

   When I was six, I went to a local grade school. In grade school, I was  36  the other children because of my speech and reading  37  . All the children would shout, “You are a dummy, you are a dummy, ” and so on. I thought they were   38  because all my grades showed it. I had no self-confidence(自信心)

  Through the first five years of grade school, I was small and very clumsy(笨拙的). I would 39

Cups and trays in the café, and sometimes  40   myself and fall onto the floor when I walked. In sixth grade, I became interested in  41   The class had its annual field day. Each class would have its own teams  42   against each other. I went out for all of the  43   I was not the best  44   I was not bad. The thing that I could do was run and run fast. This  45   the other children because I was so clumsy, and then   46   a lot more name-calling from the children. When somebody else won a race, the children told how  47   he was. When I won, they called me  48

I did not know why they were doing this. I think that it was unfair, and it   49  me.

  Between seventh and eighth grade, I started to  50   In three months, I grew seven inches. At the start of eighth grade, I began to play football. I was much bigger than everybody else. I was  51   than most of the backs we played against. The other team would not  52   the ball towards me, so I just ran them  53   It was the first time in my life that I was really good at something and   54   it. It was a new feeling of    55  .

A. above       B. before       C. behind        D. among

A. materials    B. questions     C. skills         D. problems

A. right        B. smart        C. rude          D. foolish

A. clean        B. drop        C. collect         D. serve

A. trip         B. help         C. enjoy         D. injure

A. studies       B. sports       C. books         D. talks

A. stand        B. fight        C. quarrel        D. compete

A. teams       B. subjects      C. tests          D. and

A. because     B. if            C. but           D. and

A. interested   B. shocked       C. delighted       D. disappointed

A. happened    B. continued     C. made          D. came

A. famous      B. good         C. happy         D. leaders

A. names       B. numbers      C. classmates     D. worried

A. frightened    B. ashamed      C. hurt          D. play

A. progress      B. change       C. grow         D. harder

A. faster         B. taller        C. cleverer       D. catch

A. push         B. run          C. hand         D. away

A. back         B. down         C. off          D. away

A. judged        B. recognized    C. decided      D. knew

A. courage       B. sadness       C. pride        D. regret

查看答案和解析>>

科目: 来源: 题型:阅读理解

Stephen William Hawking was born on January 8th, 1942 in Oxford, England. His parents’ house was in North London, but during the Second World War Oxford was considered a safer place to have babies. When he was eight, his family moved to St Albans. At eleven Stephen went to St. Albans School, and then on to University College, Oxford, his father’s old college. Stephen wanted to do math, although his father would have preferred medicine. Math was not available at University College, so he did physics instead. 

Stephen then went on to Cambridge to do research in Cosmology (宇宙论). After gaining his Ph.D. (哲学博士)he became first a Research Fellow, and later on a Professorial Fellow at Gonville and Caius College. After leaving the Institute of Astronomy in 1973, Stephen came to the Department of Applied Math and Theoretical Physics (理论物理), and since 1979 has held the post of Lucasian Professor of math.

Stephen Hawking has worked on the basic laws which rule the universe. With Roger Penrose he showed that Einstein’s General Theory of Relativity implied space and time would have a beginning in the Big Bang and an end in black holes. These results show it was necessary to unify(统一)General Relativity with Quantum Theory (量子论). One result of such a unification that he discovered was that black holes should not be completely black, but should give off radiation and disappear in the end.

59. Which of the following is NOT suitable for describing Stephen Hawking?

A. He once studied at the same college that his father studied at.

B. At one time he did research in Cosmology in Oxford. 

C. He preferred math to medicine at college.

D. He contributed to the unification of General Theory of Relativity and Quantum Theory.

60. The underlined word “available” in the first paragraph probably means “________”.

A. able to be had               B. allowed to study   

C. easy to understand           D. limited to learn

61. Why did Stephen Hawking’s parents move to Oxford from North London?

A. Because they liked it better than North London.

B. Because there was a world-famous university there.

C. Because they were tired of living in North London.

D. Because it was safer to give birth to a baby in Oxford.

62. Which of the following would be the best title for the passage?

A. Einstein and Stephen Hawking

B. Big Bang, a great theory 

C. Stephen Hawking, a great British scientist

D. The unification of two theories

查看答案和解析>>

科目: 来源: 题型:

单词拼写(共10题,每题1分)

76. She spent many years _______(观察) chimp behavior.                    76._________

77. The ________(争论) among the two parties was blown up by the press.77._________

78. His words are strongly ______(使印象深刻,使铭记) on my memory..   78._________

79. Alison is _______ (稍微) older than the others.                   79._________

80. There are many _______(学说,理论) about the origin of life.          80._________

81. He passed the examination, ________(相反) to what I expected.              81._________

82. She could not _________(解释) for her mistake.                    82._________

83. The doctor advised him to keep a _____(平衡的) diet.               83._________

85. Everyone has his________(长处) and weaknesses.                          84._________

 86. You must ask ________(许可) if you want to leave early..          85._________

查看答案和解析>>

科目: 来源: 题型:

---May I smoke here?

  --- If you ________, choose a seat near the window.

  A. should      B. could        C. may     D. must

查看答案和解析>>

科目: 来源: 题型:

She was not persuaded _________ the truth of his statement.

   A. of                          B. to                              C. at                             D. on

查看答案和解析>>

同步练习册答案