In the second paragraph, by saying '...it is enough to make homeowner's head spin.', the au- thor is suggesting that _________. A.it is enough to make them think hard B.it is enough to spin their head C.it is enough to rotate their head D.it is enough to make them feel headache
A...it B.', C. A.it D.it E.it F.it
【参考答案】
D 解析：推理题。第二段最后一句话“Throw in the fact that the old cycles ......