Why should anti-virus software be updated at least once a week? Which of the following is suggested by computer experts?

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问题 Why should anti-virus software be updated at least once a week?
Which of the following is suggested by computer experts?

选项 A、Don’t rush to open any e-mail attachment.
B、Never open any e-mail attachment.
C、It’s always safe to open an e-mail attachment from a friend.
D、Whenever you receive an e-mail, you should make a call to make sure whom it comes from.

答案A

解析从第四自然段最后一句 If an e-mail with attachment (附件) comes from an unknown sender，or unexpectedly from a known sender，it should not be opened．可知，不可以盲目地打开邮件的附件。所以正确的答案为A。

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本试题收录于：公共英语二级笔试题库公共英语（PETS）分类

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