问题
选择题
Even after I ______ to soil science, I sometimes wondered whether 1 was doing what I wanted to do.
A．reacted
B．switched
C．adjusted
D．contributed
答案
答案：B
题目分析：句意：即使在我转想社会科学之后，有时我也会想我是否在做我想做的事。A. reacted反应；B. switched（通常指突然地）改变、转换；C. adjusted适应；D. contributed有贡献于。由句意可知选B。
考点: 考查动词词义辨析的用法。