2. 公务员
  3. The computer plays an important part in our everyday life. It is one of the great【C1】______in the world in the【C2】______century.

The computer plays an important part in our everyday life. It is one of the great【C1】______in the world in the【C2】______century.

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问题     The computer plays an important part in our everyday life. It is one of the great【C1】______in the world in the【C2】______century. It works for us not only at home, in the offices, in big shops,【C3】______at schools. Today it is used【C4】______many ways. It really【C5】______the world large wealth(财富)and happiness.
    The first computer in the world was【C6】______Enid. It was built in America in 1946. It was【C7】______and heavy. 【C8】______it was born, it has been developing very fast. Until now it has gone【C9】______four periods(时期，阶段)and changed a lot. There’re many kinds of computers. Computers are getting smaller and smaller and computing faster and faster. It becomes more and more【C10】______
    The computer can do most of the things【C11】______the people. It can help us to【C12】______about the real world more quickly, to learn【C13】______we want to learn and to think【C14】______ourselves.【C15】______a student in the twenty-first century, you must work hard at it.
【C2】
选项 A、twenty-first
B、twenties
C、twelfth
D、twentieth
答案D
解析 要表达第几个世纪，应该用“序数词+century”，而根据常识，计算机是20世纪的产物，A项“21世纪”与实际不符合。
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