求解一篇短阅读

sylorUID: 3000216

Although the hormone adrenaline is known to regulate % `% B4 b- {1 {! A
memory storage, it does not pass from the blood into brain
cells. We are faced with an apparent paradox: how can a ) {6 Q* |5 F7 o
hormone that does not act directly on the brain have such a
(5)large effect on brain function?  U. [: M7 k8 e+ M) t
   Recently, we tested the possibility that one of the
hormone's actions outside the brain might be responsible. & d6 l! |8 r. j6 z
Since one consequence of adrenaline release in an animal 2 _& }' h1 @& K+ G% ^6 k( k& L7 r
is an increase in blood glucose levels, we examined the
(10)effects of glucose on memory in rats. We found that glu-2 R7 f1 j2 _+ {0 _* g
cose injected immediately after training enhances memory # U, H7 G0 M3 \
tested the next day. Additional evidence was provided by . Z) R( P0 C( s% V2 V
negative findings: drugs called adrenergic antagonists, 5 l* [# R! J5 w
which block peripheral adrenaline receptors, disrupted 2 K; k9 _$ O  ?/ E; e
(15)adrenaline's ability to regulate memory but did not affect
memory enhancements produced by glucose that was not 3 B; t1 R. b5 {: t5 t
stimulated by adrenaline. These results are as they should : j+ V8 h6 d1 H' b
be if adrenaline affects memory modulation by increasing
blood glucose levels.

18.It can be inferred from the passage that the author
would most likely describe the "additional evidence"
(line 12) provided by experiments with adrenergic   v4 A) A9 S% l7 |                                    sdf撒旦法
antagonists as / {. X4 W7 U/ k% Z
(A) revolutionary
(B) disappointing
(C) incomplete
(D) unexpected . t4 {* m9 K4 I
(E) corroborative


19.The passage provides information about which of the
following topics?
(A) The mechanism by which glucose affects memory
storage
(B) The evidence that prompted scientist to test the
effects of adrenaline on memory regulation
(C) The reason that the effects of glucose on memory
were tested
(D) The ways that memory storage modifies the struc-8 V3 D2 Q1 }) r: \6
ture of the brain ) c0 f( i) d' W3 Y# l5 y撒旦法





(E) The kinds of training used to test memory enhance-
ment in rats ; ~" ~0 v" s4 F  c/ H2 g士大夫

sylorUID: 3000216

Although the hormone adrenaline is known to regulate
memory storage, it does not pass from the blood into brain
cells. We are faced with an apparent paradox: how can a
hormone that does not act directly on the brain have such a
(5)large effect on brain function?
   Recently, we tested the possibility that one of the
hormone's actions outside the brain might be responsible.
Since one consequence of adrenaline release in an animal
is an increase in blood glucose levels, we examined the
(10)effects of glucose on memory in rats. We found that glu-
cose injected immediately after training enhances memory
tested the next day. Additional evidence was provided by
negative findings: drugs called adrenergic antagonists,
which block peripheral adrenaline receptors, disrupted
(15)adrenaline's ability to regulate memory but did not affect
memory enhancements produced by glucose that was not
stimulated by adrenaline. These results are as they should
be if adrenaline affects memory modulation by increasing
blood glucose levels.


18.It can be inferred from the passage that the author
would most likely describe the "additional evidence"
(line 12) provided by experiments with adrenergic                                 
antagonists as
(A) revolutionary
(B) disappointing
(C) incomplete
(D) unexpected
(E) corroborative

19.The passage provides information about which of the
following topics?
(A) The mechanism by which glucose affects memory
storage
(B) The evidence that prompted scientist to test the
effects of adrenaline on memory regulation
(C) The reason that the effects of glucose on memory
were tested
(D) The ways that memory storage modifies the struc-
ture of the brain
(E) The kinds of training used to test memory enhance-
ment in rats

sylorUID: 3000216

第18题，我只能排除disappointing和unexpected，不知道从原文中哪里可以读出作者的态度。

第19题，在新的绿皮里是不定项选择题，如下：

19.The passage provides information about which of the
following topics?
[A] The mechanism by which glucose affects memory
storage
[B] The evidence that prompted scientist to test the
effects of adrenaline on memory regulation
[C] The reason that the effects of glucose on memory
were tested
答案还是C，可是我觉得B也对，我觉得B对应着第一段的内容，就是Although the hormone adrenaline is known to regulate memory storage, it does not pass from the blood into brain cells.

lionelfengUID: 2371460

首先，文章第二段主要讲的examined the effects of glucose on memory in rats；
第一个小实验说的是葡萄糖的注入确实可以增强记忆力，葡萄糖升高又是肾上腺素释放的产物，那到底是谁起的作用呢？
第二个小实验说的是把肾上腺素这个因素排除掉，让肾上腺素降低，葡萄糖不变，发现记忆力不受影响，所以第二实验是起了一个支持的作用，答案E

lionelfengUID: 2371460

第二题，B里的内容无需在测试了，文章已经给出了答案
Although the hormone adrenaline is known to regulate memory storage
科学家们关于它的effects已经知道了，只是不知道如何effect的

sylorUID: 3000216

4# lionelfeng 多谢，第三题想明白了，第二题我这儿的答案错了好像，他选的是C，让我觉得是不是和negative response有关，现在看来应该直接看两个实验的关系。

米兰啸西风UID: 3136730

6# sylor

第一题是选corroborative吗？为什么答案是C？

sylorUID: 3000216

7# 米兰啸西风 我查网上从白本上节选的题给的答案都是E，但是绿皮书上给的答案是C，我依旧不是很确定。