【題目】The computer system suddenly while he was searching for information on the Internet.

A. broke down

B. broke out

C. broke up

D. broke in

【答案】A

【解析】句意：當(dāng)他正在互聯(lián)網(wǎng)上搜索信息時(shí)，計(jì) 算機(jī)系統(tǒng)出了故障。break down意為“(機(jī)器等)出現(xiàn)故障”，符合句意。break out“(戰(zhàn)爭(zhēng)、火災(zāi)等)突然發(fā)生”；break up“解散；驅(qū)散”；break in“闖入”。

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