题目内容

You       trust an online shop just because it has a beautifully-designed website.
A．shouldn’tB．couldn’tC．mustn’tD．needn’t
A

试题分析：句意，你不应该相信网上的商店，因为它只不过是设计精美的一个网页。这里表示“不应该”，故选A，couldn’t 不可能  mustn’t禁止 needn’t 没有必要。
点评：在学习情态动词时主要从其语法功能和特殊含义的归纳上下工夫，如情态动词表示能力、情感态度和表示推测三种意义的用法差别等。
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