【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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