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    科目： 来源：不详 题型：单选题

    _____ is known to us all, a skill can only be acquired through hard work.
    A．ItB．AsC．WhatD．That

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    科目： 来源：不详 题型：单选题

    The reason ____ the people in the mainland go to Hong Kong to buy formula is that people are not convinced ____the safety of formula produced in the mainland.
    A．that; at B．why; at C．why; of D．what; of

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    科目： 来源：不详 题型：单选题

    These are the words ____ you must attach great importance when you write the essay.
    A．in which B．to which C．which D．that

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    科目： 来源：不详 题型：单选题

    ____ we want to know is whether we must finish the work ____ you assigned last week.
    A．What; that B．What; what C．That; what D．That; where

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    科目： 来源：不详 题型：单选题

    Mass deaths of birds were not unheard of, but they normally happened unnoticed at sea or in rural areas away from towns. Many birds are weak and die in winter _______ food is scarce.
    A．whichB．whatC．whenD．how

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    科目： 来源：不详 题型：单选题

    The local TV program Kankankan(看看看) can often help solve problems and draw attention     to situations_______ help is needed.
    A．that B．whoseC．whereD．which

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    科目： 来源：不详 题型：单选题

    ---Three people got killed by two explosions.
    ---When was __________?
    ---________ was on April 15 __________ the 2013 Boston Marathon was being held．
    A．that; It; whenB．this; This; that
    C．this; It; whenD．that; It; that

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    科目： 来源：不详 题型：单选题

    Our school basketball match will be held from October 12th to 16th, during       time as many as 30 teams will compete for the championship.
    A．whichB．whoseC．whenD．that

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    科目： 来源：不详 题型：单选题

    Encouraged by my science teacher, I set about my studies on developing my product, _____I hope I will succeed in applying for a patent（专利）.
    A．with whomB．to whomC．through whichD．for which

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    科目： 来源：不详 题型：单选题

    Stephen Hawking believes that the earth is unlikely to be the only planet _______ life has developed gradually.
    A．thatB．whereC．whichD．whose

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