【題目】The audience who come to the live broadcast scene are always chosen ______ in order to be fair.

A. in general B. by chance

C. on purpose D. at random

【答案】D

【解析】考查介詞短語(yǔ)。句意為了體現(xiàn)公平，來(lái)直播現(xiàn)場(chǎng)的觀眾總是隨機(jī)選擇的。at random任意地，隨便地；in general通常，大體上，一般而言，總的來(lái)說(shuō)；by chance偶然地，意外地，無(wú)意之中，碰巧；on purpose并非偶然地，故意地。

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