第九题的A选项是文中的那句话呢?第十题的D选项为什么是对的呢?9. The author provides information that would
answer which of the following questions?
□ A Why is an aroused herbivore usually fearful?
□ B What are some of the degrees of attention in large
mammals?
□ C What occurs when the stimulus that causes arousal of
a mammal is removed?
10. According to the passage, as the process of
arousal in an organism continues, all of the
following may occur EXCEPT
(A) the production of adrenaline
(B) the production of norepinephrine
(C) a heightening of sensitivity to stimuli
(D) an increase in selectivity with respect to stimuli
(E) an expansion of the range of states mediated
by the brain stem