According to a theory advanced
by researcher Paul Martin, the wave
of species extinctions that occurred
Line in
(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.
Q6:
Which of the following, if true, would most weaken Krech’s objections to Martin’s theory?
答案是B.
我搞不懂题干的关键: Krech’s objections to Martin’s theory是 K对M的反对(即K的观点),还是 K要反对的M的观点
我感觉是前者,所以选了C. 说明不是气候的原因,削弱 K的观点与气候有关.
请教!谢谢!
不明白你为什么搞不懂你指的关键,觉得是K对M的反对所以选C,晕~~
我觉得本来不存在问K要反对M的观点,因为文章出现K就是对M的反对,而题目就问你怎么削弱Kor增强M;M的观点就是物种灭绝是人干的,K就是反对同时提了几个例子(没证据说人干的;有可能是气候引起);
C说其他的时期气候也变化了仅此而已,如果加上一句“但都没产生灭绝”倒是可以(直接削弱K);B说有证据证明人用的一些物种灭绝了,是对K的削弱。
不知有没有讲明白,我也是初学请多多指教
原来是我没理解好B,惭愧! 削弱K增强M是对的.
make use of----利用! 也不知我怎么脑袋昏了.放在句中理解成了"有用,有利"了,恰恰成了削弱M增强K了.
谢谢sgauly!
JJ别客气,看的多了难免会花眼。加油,祝你好运
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