Paper       first invented in China .

A．is B．a(chǎn)re C．was D．were

B

解析試題分析：句意：紙是首先在中國(guó)發(fā)明的。結(jié)合常識(shí)，紙的發(fā)明是過(guò)去的事，故用一般過(guò)去時(shí)，故排除AB兩項(xiàng)。因?yàn)橹髡Z(yǔ)是paper不可數(shù)名詞，故謂語(yǔ)用單數(shù)形式，故選B。
考點(diǎn)：考查時(shí)態(tài)和主謂一致的用法。

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