【題目】The scientist has done several ________ to find out the reasons for the strange.

A.standardsB.stepsC.gamesD.experiments

【答案】D

【解析】

句意:這位科學(xué)家做了幾項(xiàng)實(shí)驗(yàn)來(lái)找出這種奇怪現(xiàn)象的原因。

考查名詞。standards標(biāo)準(zhǔn);steps臺(tái)階;games游戲;experiments實(shí)驗(yàn);根據(jù)“The scientist”可知是科學(xué)家,結(jié)合后面是找出這種奇怪現(xiàn)象的原因,可推測(cè)出此處是“實(shí)驗(yàn)”,故選D

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