天山4－32 大家选什么？

sophia1015

Q32:

Delta products, Inc., has recently switched at least partly from older technologies

using fossil fuels to new technologies powered by electricity. The question has been

raised whether it can be concluded that for a given level of output, Delta’s operation now

causes less fossil fuel to be consumed than it did formerly. The answer, clearly, is yes,

since the amount of fossil fuel used to generate the electricity needed to power the

new technologies is less than the amount needed to power the older technologies,

provided that the level of output is held constant.

In the argument given, the two boldface portions play which of the following roles?

A. The first identifies the content of the conclusion of the argument; the second

provides support for that conclusion.

B. The first provides support for the conclusion of the argument; the second

identifies the content of that conclusion.

C. The first states the position that the argument opposes; the second states the

conclusion of the argument.

D. Each provides evidence that calls the conclusion of the argument into question.

E. Each provides support for the conclusion of the argument.

答案说是E