达人指教 谢谢 prep2 －16

xohe赵

C中的it 是指代的 growthhormone  可以从人体获得

cicisummer728

同位语求指导
你逻辑好强
According to surveys by the National Institute on Drug Abuse, about 20 percent ofyoung adults used cocaine in 1979, doubling those reported in the 1977 survey.
(A) doubling those reported in the 1977 survey
(B) to double the number the 1977 survey reported
(C) twice those the 1977 survey reported
(D) twice as much as those reported in the 1977 survey
(E) twice the number reported in the 1977 survey
这个答案是什么 是e吗

xohe赵

我觉得不是e吧··· 文中就成为了 百分数与number的比较 个人感觉哈

cicisummer728

en 那就是c

xohe赵

en 那就是c

-- by 会员 cicisummer728 (2012/11/22 8:10:18)

我看了下解释。应该是E
A/those指代的是人。20percent和人比较不对
B/to不能在逗号后面做modifier成分
C还是those吧
D/twice as  much不对
NN指导下

cicisummer728

a，doubling这种形式看到就排除把 ，b你说的对，d可数所以是many，这些都是基于是不是数字，如果前面是数字 所以第一反应就是e了

cicisummer728

我是cc菜菜
再麻烦一道题

A group of paleontologists recently announced that a site in Utah has yielded fossils of some of the biggest armored dinosaurs ever found, and that they were at least 25 million years older than any similar dinosaur type previously found in North America.

(A) and that they were at least 25 million years older than any similar dinosaur type previously
(B) and they are at least 25 million years older than those of any similar dinosaur type that previously was
(C) and the fossils are at least 25 million years older than any similar dinosaur types that previously were
(D) fossils that are at least 25 million years older than those of any similar dinosaur type previously
(E) fossils at least 25 million years older than similar dinosaur types previously
这种题一直错 总选错 在d和e中纠结

yiqing2012

D 中it 指代 a synthetic growthhormone。生合成的生长激素。但是合成的生长激素不可能从人类
体内获得啊···so 只有从C/E中选。但是E中learning的逻辑主语错误 所以只有C了

-- by 会员 xohe赵 (2012/11/22 7:25:02)

除了这个之外，before learning..,scientists...中scientists必须是learning的主语，即发出remove和learn动作的scientists必须是同一scientists，这显然不符合逻辑，所以即使D选项改成了before learning how to synthesize growth hormone, scientists...也没有C选项合理~~
可以看一下ron对这道题的解答~：http://www.manhattangmat.com/forums/before-scientists-learned-how-to-make-a-synthetic-growth-t637-30.html

yiqing2012

a，doubling这种形式看到就排除把 ，b你说的对，d可数所以是many，这些都是基于是不是数字，如果前面是数字 所以第一反应就是e了

-- by 会员 cicisummer728 (2012/11/22 9:53:03)

这里doubling错的原因不是这个形式问题。。。doubling后面跟的是those，这里的those指代什么？只能指代young adults,但是survey里报导的不可能是人啊，只能是数字。。。

yiqing2012

我是cc菜菜
再麻烦一道题

A group of paleontologists recently announced that a site in Utah has yielded fossils of some of the biggest armored dinosaurs ever found, and that they were at least 25 million years older than any similar dinosaur type previously found in North America.

(A) and that they were at least 25 million years older than any similar dinosaur type previously
(B) and they are at least 25 million years older than those of any similar dinosaur type that previously was
(C) and the fossils are at least 25 million years older than any similar dinosaur types that previously were
(D) fossils that are at least 25 million years older than those of any similar dinosaur type previously
(E) fossils at least 25 million years older than similar dinosaur types previously
这种题一直错 总选错 在d和e中纠结

-- by 会员 cicisummer728 (2012/11/22 9:55:42)

fossils of some of the biggest armored dinosaurs对应 fossils of any similar dinosaur type，用fossils对应dinosaur是不对的。。。。