问题
选择题
The new technology,if ________ to farming,will help increase the grain output.
A.applying
B.to apply
C.applied
D.having applied
答案
答案:C
考查省略。if引导的条件状语从句中省略了与主句相同的主语及系动词,补全后为:if the new technology is applied to farming,因此选C。