2019年mpa考试英语真题——介词和介词短语2295

{01}Brown said he was by no means annoyed; ___________ he was glad to be able to make himself clearly understood. A.all in all B.on the other hand C.on the contrary D.in many ways. 解析：本题考查介词短语辨析。根据句意：布朗说他一点儿都不恼火。相反（on the contrary）他很高兴能够被透彻理解。All in all总而言之；on the other hand另一方面；in many ways许多方面，均不符合语境，故排除。解题的关键是对词组by no means=never（决不）的理解。
本题选C。
{02}Scientists are convinced______ the positive effect of laughter______ physical and mental health. A.of ; at B.by ; in C.of ; on D.on ; at 解析：考察介词。Be convinced of 为固定词组，意为对……信服  effect on sth 意为对……的影响 为固定短语 ，所以选择C
句意为，科学家们对笑声对身心健康产生的影响深信不疑。
本题选C。