练习册

  • 练习册
  • 试题
    精英家教网 > 高中英语 > 题目详情
    ―The experiment is of particular importance.
    ―I see. We will carry on with it ________ we can get enough money.
      A. unless    B. though    C. whether    D. until

    C

    解析：whether引导名词性从句时，意为“是否”。若其引导状语从句，意为“不论是否……”。

    练习册系列答案
    年级 高中课程 年级 初中课程
    高一 高一免费课程推荐！ 初一 初一免费课程推荐！
    高二 高二免费课程推荐！ 初二 初二免费课程推荐！
    高三 高三免费课程推荐！ 初三 初三免费课程推荐！
    相关习题

    科目：高中英语 来源： 题型：

    As soon as I entered Evan’s company I saw a board ________ “ ________ to Evans”.
      A. reads; Welcomed                                   B. written; to Welcome
      C. reading; Welcome                                  D. printed; Welcomed

    查看答案和解析>>

    科目：高中英语 来源： 题型：

    Do you think the reason ________ he gave is believable?
      A. for which   B. which    C. why      D. what

    查看答案和解析>>

    科目：高中英语 来源： 题型：阅读理解

      How many coins nave you got in your pocket right now? Three? Two？ A bent one？
      With a phonecard you can make up to 200 calls without any change at all.
      （1） What do you do with it?
      Go to a telephone box marked（you guessed it） “phonecard”. Put in your card, make your call and when you’ve finished, a screen tells you how much is left on your card.
      （2） Now appear in a shop near you.
      Near each Cardphone place you’ll find a shop where you can buy one. They’re at bus, train and city tube stations（地铁）.
      Many universities, hospitals and clubs. Restaurants and gas stations on the highway and shopping centers. At airports and seaports.
      （3） No more broken payphones.
      Most broken payphones are like that because they’ve been vandalized（故意破坏）. There are no coins in Cardphone to excite thieves’ interest in it. So you’re not probably to find a vandalized one.
      Get a phonecard yourself and try it out ,or get a bigger wallet.


      60．The passage is most probably ________ .
      A. a warning
      B. a note
      C. an advertisement（广告）
      D. an announcement
      61．There are three sections（部分） in the passage. Which section do you think is about why phonecards are good?
      A. Section 1．          B. Section 2．
      C. Section 3．          D. None.
      62．Choose the right order or the steps under “How do you use a phonecard”.
      a. Put in your phonecard.
      b. Look at the screen to find out how many calls you can still make.
      c. Go to a telephone box marked “Phonecard”.
      d. Make your call.
      A. a, b, c, d            B. c, a, d, b
      C. a, d, c, b            D. c, d, a, b

    查看答案和解析>>

    科目：高中英语 来源： 题型：

    Now that he has missed his ________, he’ll have to wait for the next round.
      A. chance    B. turn     C. duty      D. class

    查看答案和解析>>

    科目：高中英语 来源： 题型：阅读理解

      Many people believe the glare（炫目的光）from snow causes snowblindness. Yet, with dark glasses or not, they find themselves suffering from headaches and watering eyes, and even snowblindness ,when exposed to several hours of“ snow light”.
      The United States army has now determined that glare from snow does not cause snowblindness in troops in a snow -covered country. Rather ,a man’s eyes frequently find nothing to focus on （聚集） in a broad space of snow- covered without- grass land. So his gaze continually moves and jumps back and forth over the entire landscape in search of something to look at. Finding something, hour after hour, the eyes never stop searching and the eyeballs become tired and the eye muscles ache. Nature makes up for this discomfort by producing more and more fluid （流 体） which covers the eyeball. The fluid covers the eyeball in increasing quantity until it makes eyes difficult to see dearly, and the result is total, even though for a short time, snowblindness.
      Experiments led the Army to a simple method of overcoming this problem. Scouts（侦察兵）ahead of the troops are trained to shake snow from evergreen bushes, creating a dotted line as they cross completely snow - covered landscape. Even the scouts themselves throw lightweight, dark - colored objects ahead on which they can focus too. The men following can then see something. Their gaze is arrested. Their eyes focus on a bush and having found something to see, stop searching the snow -blanketed landscape. By focusing their attention on one object at a time. the men can cross the snow without becoming hopelessly snowblind or lost. In this way the problem of crossing a continuous white land is overcome.


      72．To prevent snowblindness caused by the strong light from snow, wearing glasses or not ________.
      A. depends on whether the snow is white enough
      B. makes no difference
      C. makes much difference
      D. depends on whether the snow is thick
      73．When the eyes are tired, tears flow out ________.
      A. to clear the vision
      B. to make the eyes stop searching
      C. to make the vision unclear
      D. to produce more and more liquid
      74．Snowblindness can be avoided ________.
      A. by moving one’s gaze back and forth
      B. by walking ahead and keeping looking around
      C. by making up for the discomfort of one’s eyes
      D. by providing the eyes with something to focus on
      75．What is the probable meaning of the underlined part “Their gaze is arrested” （in paragraph 3 ） ?
      A. They get something to look at.
      B. They can only look at one spot.
      C. Their eyes are clear.
      D. They can’t see freely.

    查看答案和解析>>

    科目：高中英语 来源： 题型：

    It was several years _____ I finally realized _____ David had lied to me.

    A. when; that       B. that; when                  C. before; that       D. until; why

    查看答案和解析>>

    科目：高中英语 来源： 题型：阅读理解

    On Jan. 13th, 2009, the Peanut Corporation of America issued a recall (召回) for products it had made over the past six months, after five people had died and more than 400 had fallen ill with salmonella（沙门氏菌）poisoning as a result of contamination. Two weeks later, the recall was extended to more than 400 consumer products made since Jan. 1, 2007, including Jenny Craig nutritional bars and Keebler Peanut Butter Sandwich Crackers, while the toll from the contamination had reached eight dead and more than 500 sickened in 43 states, half of them children.
       The company's factory in Blakely, Ga., which was the source of the contamination, supplied some of the largest food makers in the nation. The outbreak showed the complexities of the industrial food chain, and left consumers to figure out if some food in their cabinets had a danger. The recall of peanut products is the latest in a series of increasingly severe food contamination scares involving tomatoes, spinach, cantaloupes and other foods.
       The Georgia plant, which is closed, packed peanut butter in bulk ranging from 5 to 1,700 pounds, much of which was shipped to institutions. Many school districts have pulled peanut butter from menus, with some substituting more commonly recognized supermarket brands. New York City school officials said they had not bought any peanut butter or products with ingredients that originated at the Georgia plant.
       An F.D.A. inspection team that visited the plant on Jan. 9 discovered that on 12 occasions in 2007 and 2008 tests conducted by the company found salmonella contamination in its products but that it shipped the contaminated products to customers after a retest found no contamination and did nothing to clean the plant.


    57. We can learn from the passage that__________.

    A. 13 persons have died because of the poisoning

    B. people may now worry about the food at their homes.

    C. people can return the food to the supermarkets

    D. half of the school children have fallen ill

    58. According to the passage, which of the following statements is NOT true?

    A. Much of the peanut butter produced in the plant was supplied to schools.

    B. It is the first time that the virus has been found in the products in this company.

    C. Some consumer products made since nearly two years ago were also recalled.

    D. There have been some other food concerns besides peanut products recently.

    59. What can be inferred from the fact that the recall was extended?

    A. The outbreak showed the complication of the food chain.

    B. The poisoning has been found in the products made much earlier.

    C. The poisoning has been found in more products.

    D. More persons would die or get ill after having the products.

    60. The passage is mainly about___________.

    A. the importance of food inspection in the US

    B. the problems in the US food industry

    C. food poisoning in some schools

    D. a recall for peanut products of a company

    查看答案和解析>>

    科目：高中英语 来源： 题型：

    In memory of China’s Youth’s Day, ____________ celebration evening took place on our campus. It was ___________ success.

           A．a; a            B．the; the              C． a; /                D．the; a

    查看答案和解析>>

    同步练习册答案