[求助]天山-4-14

The milk of many mammals contains cannabinoids, substances that are known to
stimulate certain receptors in the brain. To investigate the function of cannabinoids,
researchers injected newborn mice with a chemical that is known to block cannabinoids
from reaching their receptors in the brain. The injected mice showed far less interest in
feeding than normal newborn mice do. Therefore, cannabinoids probably function to
stimulate the appetite.
Which of the following is an assumption on which the argument depends?
A. Newborn mice do not normally ingest any substance other than their mothers’
milk.
B. Cannabinoids are the only substances in mammals’ milk that stimulate the
appetite.
C. The mothers of newborn mice do not normally make any effort to encourage their
babies to feed.
D. The milk of mammals would be less nutritious if it did not contain cannabinoids.
E. The chemical that blocks cannabinoids from stimulating their brain receptors does
not independently inhibit the appetite

MINE B

ANS E

不明白啊~~~~~~~~~~~~~~~~~````

奇怪，为什么我的天山的这个题号的题目是

T-4-Q14 GWD-13-38

Frobisher, a sixteenth-century English explorer, had soil samples from Canada’s Kodlunarn
                    Island examined for gold content.  Because high gold content was reported, Elizabeth I funded two mining expeditions.  Neither expedition found any gold there.  Modern analysis of the island’s soil indicates a very low gold content.  Thus the methods used to determine the gold content of Frobisher’s samples must have been inaccurate. （MY answer is D）
                

Which of the following is an assumption on which the argument depends?

1. The gold content of the soil on Kodlunarn
                           Island is much lower today than it was in the sixteenth century.

2. The two mining expeditions funded by Elizabeth I did not mine the same part of Kodlunarn
                           Island.

3. The methods used to assess gold content of the soil samples provided by Frobisher were different from those generally used in the sixteenth century.

4. Frobisher did not have soil samples from any other Canadian island examined for gold content.

5. Gold was not added to the soil samples collected by Frobisher before the samples were examined.

T-4-Q14 GWD-13-38