His technique has developed to the point __he can help kill the latest computer virus going around.
问题描述：
His technique has developed to the point __he can help kill the latest computer virus going around.
His technique has developed to the point __he can help kill the latest computer virus going around the city .
A.that B.which C.when D.where
答案是D,为什么不是A
答
point是指一个地步.外国人理解成一个点,也就是一个地理和空间的概念.所以用where.
（这只是应试教育的解释.其实,你真的在国外用that也是很常见的.）