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    【題目】It's said that if people have positive attitudes, their body may ________ a kind of chemical that helps to fight illnesses.

    A.produceB.developC.manageD.invent

    【答案】A

    【解析】

    考查動詞詞義辨析。句意:據(jù)說如果人們有積極的態(tài)度,他們的身體會________一種能幫助抵抗疾病的化學(xué)物質(zhì)。produce產(chǎn)生;develop發(fā)展;manage管理;invent發(fā)明。根據(jù)句意可知此處指產(chǎn)生。故選A

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