According to a theory advanced

by researcher Paul Martin, the wave

of species extinctions that occurred

Line in North America about 11,000 years

(5) ago, at the end of the Pleistocene era,

can be directly attributed to the arrival

of humans, i.e., the Paleoindians, who

were ancestors of modern Native

Americans. However, anthropologist

(10) Shepard Krech points out that large

animal species vanished even in areas

where there is no evidence to demon-

strate that Paleoindians hunted them.

Nor were extinctions confined to large

(15) animals: small animals, plants, and

insects disappeared, presumably not

all through human consumption. Krech

also contradicts Martin’s exclusion of

climatic change as an explanation by

(20) asserting that widespread climatic

change did indeed occur at the end of

the Pleistocene. Still, Krech attributes

secondary if not primary responsibility

for the extinctions to the Paleoindians,

(25) arguing that humans have produced

local extinctions elsewhere. But,

according to historian Richard White,

even the attribution of secondary

responsibility may not be supported

(30) by the evidence. White observes that

Martin’s thesis depends on coinciding

dates for the arrival of humans and the

decline of large animal species, and

Krech, though aware that the dates

(35) are controversial, does not challenge

them; yet recent archaeological

discoveries are providing evidence

that the date of human arrival was

much earlier than 11,000 years ago.

GWD-6-Q6:

Which of the following, if true, would most weaken Krech’s objections to Martin’s theory?

答案是B。但是原文说的是 small animals, plants, andinsects disappeared, presumably not all through human consumption. ：那些灭绝的小动物并不全是被人类consume掉的。B说的是人类确实consume了那些灭绝的小动物。这个答案怎么能weaken呢？Krech并没有否认人类consume了动物呀。

当然别的答案也都不好，而且可能只有C还粘点边。