18. If the author’s argument were challenged on the grounds that the construction of buildings has adverse effects on the natural environment, which of the following replies might the author use to respond to the challenge logically?
(A) There are human activities, such as making music, that are environmentally harmless.
(B) Harming the environment is not an end, or purpose, of the arts of life.
(C) The construction could involve the use of natural, not artificial, materials.
(D) Constructing buildings is not an “art of life.”（E）
(E) Even if the natural environment is disturbed by the construction of buildings, it is improved for human use.
答案E 读了半天提干也不明白作者是在支持“应该nature”还是“arts of life比nature好”呢？以前没遇到过这样的题型，这中题究竟该找什么突破口呢？
