ID：9121-12993（本题为引用材料试题，请根据材料回答以下问题）
A new study on birds’ sleep has revealed that ________.
A) half brain sleep is found in a wide variety of birds
B) half brain sleep is characterized by slow brain waves
C) birds can control their half brain sleep consciously
D) birds seldom sleep with the whole of their brain at rest
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ID：9121-12873（本题为引用材料试题，请根据材料回答以下问题）
The word “empirical” (Line 6, Para.3) most probably means “__________”.
A. theoretical B. critical
C. indisputable D. experiential
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ID：9121-13066
In some countries, students are expected to be quiet and ________ in the classroom.
A) skeptical B) faithful C) obedient D) subsidiary
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ID：9121-13167（本题为引用材料试题，请根据材料回答以下问题）
For how many reasons has the author sought love?
A) 1. B) 2. C) 3. D) 4.
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ID：9121-12889（本题为引用材料试题，请根据材料回答以下问题）
Working class children are felt to be at a disadvantage because _______.many of the clever ones leave school early
fewer go to university than ever before
more than half leave school when they are 16
fewer boys than girls stay at school after 16
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