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We _____ more than 1,600 words since we began to learn English.

A．learn B．have learned
C．learned D．a(chǎn)re learning

B

解析試題分析：句意：自從我們開(kāi)始學(xué)英語(yǔ)我們已經(jīng)學(xué)了1600多個(gè)單詞了。現(xiàn)在完成時(shí)表示過(guò)去某一時(shí)間開(kāi)始并一直持續(xù)到現(xiàn)在并且有可能還會(huì)持續(xù)的動(dòng)作或狀態(tài)。結(jié)合句意，故選B
考點(diǎn)：考查時(shí)態(tài)的用法

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