问题
单项选择题
For nearly 50 years, Spock has been a ______ author writing 13 books including an autobiography and numerous magazine articles.
A.prevalent
B.precautious
C.prospective
D.prolific
答案
参考答案:D
解析: D项“prolific多产的”,如:Apple trees are prolific. 苹果树是多产植物。根据空格处的意思“Spock是个多产的作家”,故选D。A项prevalent“普遍的,流行的”;B项precautious“警戒的,小心的”;C项prospective“预期的,有希望的”,均不符合题意。