【題目】—According to a recent survey, many students have poor eyesight (視力).

—In my opinion, reading on mobile phones too often is the ________ of having poor eyesight.

A.costB.resultC.cause

【答案】C

【解析】

句意：——根據(jù)最近的一項(xiàng)調(diào)查，許多學(xué)生視力不好。——在我看來(lái)，經(jīng)常用手機(jī)閱讀是視力不好的原因。
考查名詞辨析。cost花費(fèi)，代價(jià)；result結(jié)果；cause原因，起因。根據(jù)題意“經(jīng)常用手機(jī)閱讀是視力不好的____”，結(jié)合常識(shí)及選項(xiàng)可知應(yīng)是原因，用cause符合題意。故選C。

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