[求助]严重求助，GWD3-Q5的答案是什么额滴神的饿？

昨天问了一个q5的问题，但是同时也有同学问哈，那么标准答案是什么啊，我自己选择A，但是答案是B啊

啊，拜托统一一样，到底是A还是B啊？

浏览的人不少，怎么没有答案呢

LZ好像忘了这篇文章，我来帖吧。

 In 1994, a team of scientists led by David Mckay began studying the meteorite ALH84001, which had been discovered in Antarctica in 1984. Two years later, the McKay team announced that ALH84001, which scientists generally agree originated on Mars, contained compelling evidence that life once existed on Mars. This evidence includes the discovery of organic molecules in ALH84001, the first ever found in Martian rock. Organic molecules—complex, carbonbased compounds—form the basis for terrestrial life.  The organic molecules found in ALH84001 are polycyclic aromatic hydrocarbons, or PAH’s.  When microbes die, their organic material often decays into PAH’s.

         Skepticism about the McKay team’s claim remains, however.  For example, ALH84001 has been on earth for 13,000 years, suggesting to some scientists that its PAH’s might have resulted form terrestrial contamination. However, McKay’s team has demonstrated that the concentration of PAH’s increases as one looks deeper into ALH84001, contrary to what one would expect from terrestrial contamination. The skeptic’s strongest argument, however, is that processes unrelated to organic life can easily produce all the evidence found by McKay’ s team, including PAH’s.  For example, star formation produces PAH’s.  Moreover, PAH’s frequently appear in other meteorites, and no one attributes their presence to life processes. Yet McKay’s team notes that the particular combination of PAH’s in ALH84001 is more similar to the combinations produced by decaying organisms than to those originating form nonbiological processes.（完）

A.      It was initially proposed by the McKay team of scientists.

B.      It is not a matter of widespread scientific dispute.

C.      It has been questioned by some skeptics of the McKay team’s work.

D.      It has been undermined by recent work on PAH’s.

E.       It is incompatible with the face that ALH84001 has been on Earth for 13,000 years.

答案是B，应该定位在以下红色字上。

 In 1994, a team of scientists led by David Mckay began studying the meteorite ALH84001, which had been discovered in Antarctica in 1984. Two years later, the McKay team announced that ALH84001, which scientists generally agree originated on Mars, contained compelling evidence that life once existed on Mars.

应该选B吧，A文章没有提出来。B的依据是scientists generally agree originated on Mars，就是说这个问题没有争议。