问题
选择题
In ancient times, dogs were mainly ______helping people hunt( 打猎) .Now they are more useful-they can help the blinds, search for the bad eggs,...
A．bad for
B．used to
C．used for
D．good at
答案
答案：C
考查词语辨析。be bad for“对…有害”； be used to do“过去常常做…” be used for doing “被用来干…” be good at doing“擅长干…”句意为“在古代，狗主要用来帮人们打猎。现在，它们更有用—能帮助盲人，搜寻坏蛋…”故选C。