2. 外语
  3. The marvel of the machine age, the electronic computer has been【C1】______only since 1946. It can do simple computations — add, s

The marvel of the machine age, the electronic computer has been【C1】______only since 1946. It can do simple computations — add, s

admin2014-01-13  39
问题     The marvel of the machine age, the electronic computer has been【C1】______only since 1946. It can do simple computations — add, subtract, multiply and divide —【C2】______lighting speed and perfect accuracy. It can multiply two 1-digit number in 1/1, 1000 seconds, a problem that would【C3】______an average person five minutes to do with pencil and paper. Some computers can work 500, 000 times faster than【C4】______.
    Once it is given a "program" — that is, a【C5】______set of instructions devised by a technician trained in computer language — a computer can gather【C6】______information for many purposes. For example, it can【C7】______bank accounts up to date and make out electric bills. If you are planning a trip by plane, the computer will find out【C8】______route to take. Not only can the computer gather facts, it can also store them as fast as they are gathered and can【C9】______whenever they are needed. 【C10】______gathering and storing information, the computer can also solve complicated problems that once took months for people to do.
    For example, 【C11】______sixteen hours an electronic brain solved a difficult design problem. First, it was【C12】______all the information necessary for designing a chemical plant. After running through 16, 000 possible designs, it【C13】______the plan for the plant that would produce the most chemical at the lowest cost. Then it issued a printed set of exact【C14】______. Before it solved this problem, a team of engineers having the same information had worked for a year to produce only three designs, 【C15】______of which was as efficient as the computer’s.
【C9】
选项 A、pour them out
B、drive them out
C、stamp them out
D、get rid of them
答案A
解析 动词词组辨析。pour them out“把它们倒出”；drive them out“把它们赶出”；stamp them out“将它们彻底歼灭”；get rid of them“把它们去除”。根据句意“随时把需要的倒出来”可知答案为A。 ’
转载请注明原文地址:https://kaotiyun.com/show/ZGQO777K
0

考博英语

相关试题推荐
随机试题
最新回复(0)