The local area network also connects to a wide area network that allow a message ______ across the country or to other countries.

2023-05-26

A.is sent
B.to be sent
C.sending
D.send

参考答案:B

本题考查动词语态。题干意为“局域网连入广域网,就允许在国内或国际间发送信息。”题干中,allow sb (sth) to do为固定搭配,另外此处表示信息被传播,所以用被动形式,即to be done,因此B选项正确。

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