A、  B、  C、  A题干问的是电脑是否还不好用。这种问题要用以Yes／No或与此类似的词来回答。所以不难发现，以No开始的(A)是正确答案。问的是哪家公司的产品时，可以用(B)来回答，(C)是完全不相干的回答。

Where should I put these boxes?
(A)Beside the other ones.
(B)No, they’re a little heavy.
(C)They’re unloading them now.

Is your computer still not working?
(A)No, but it’s very slow.
(B)I’m using Henry’s.
(C)It’s a faster way of working.