【題目】WeChat is _________ useful tool to communicate with others nowadays.

A. anB. /C. theD. a

【答案】D

【解析】

句意:現(xiàn)在微信是一個(gè)和別人進(jìn)行交流的有用的工具。aan是不定冠詞,修飾可數(shù)名詞單數(shù),表示泛指一個(gè);an用于元音音素前;the是定冠詞,修飾名詞表示特指。根據(jù)句意可知,這里指“一個(gè)有用的工具”,應(yīng)用不定冠詞,空后的useful的第一個(gè)讀音是/j/,輔音,故應(yīng)選D。

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