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    精英家教网 > 高中英语 > 题目详情
    19．-Why，my new computer is rubbish!Five hours has passed and it still hasn't finished the downloading．
    -Don't worry．You know，sometimes the Internet ________ be very slow．（　　）
    A．canB．mayC．shouldD．must

    分析 --为什么，我的新电脑真是垃圾！五个小时过了，它还是没有完成下载．
    --不要担心，你也知道有时候网络会很慢．

    解答 答案：A
    解析：A：会；可能B：或许；可能C：应该；D：必须．首先根据句意"你也知道有时候网络会很慢"可知C、D选项直接排除．can在肯定句中表"可能性"时是表示"理论上的可能性"，而不是表示具体某事发生的可能性，表示这样的意思时要用could，may 或might．本题中网络有时候"可能"慢，这是一种理论上的可能性（因为理论上来讲上网的人多了，网速就会慢）；故B选项排除．综上，本题答案为A选项．

    点评 本题考查情态动词，做此类题目时一定要先分析各个选项的含义及其用法再结合句意选出正确答案．

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