The scientists have already the secret of the universe.

A. found B. looked for C. discovered D. seen

C 【解析】句意：科學(xué)家們已經(jīng)發(fā)現(xiàn)了宇宙的奧秘。考查動(dòng)詞辨析題。A. found尋找；B. looked for查找，強(qiáng)調(diào)過程；C. discovered發(fā)現(xiàn)（本已存在的）；D. seen看見。根據(jù)句意和語境，可知ABD三個(gè)選項(xiàng)意思都與句意不符，故選C。
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Advantages

(優(yōu)點(diǎn))

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·Send e-mails to our friends4..

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