【題目】The self-driving plane proves to be useful in many ways. __________ object it is!

A.How smartB.What a smartC.How boringD.What boring

【答案】B

【解析】

句意：事實(shí)證明，自動(dòng)駕駛飛機(jī)在許多方面都很有用。多聰明的一個(gè)東西�。�

考查感嘆句和形容詞。根據(jù)上一句可知，自動(dòng)駕駛飛機(jī)很有用，故空格處形容詞應(yīng)用smart，C、D選項(xiàng)可排除。將感嘆句改為陳述句it is (a) smart object！可知，被感嘆部分含有名詞，即object，適用“What + a +形容詞+名詞+（主語(yǔ)+謂語(yǔ)）！”。故選B。

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