Question

A survey of the opinions of experts           that three hours of outdoor exercise a week is good for one’s health.
A. show                      B. shows                C. is shown

Answer 1

B

解析試題分析：句意：專家觀點(diǎn)的調(diào)查表明在戶外一周鍛煉三個小時對健康有好處。主語是第三人稱單數(shù)，和謂語動詞之間事實(shí)主動關(guān)系，故選B。
考點(diǎn)：考查動詞的第三人稱單數(shù)的用法。