题目内容

成人在清醒，安静并闭眼时出现E．

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We______this visit for months — you can't cancel it now.

A. planned
B. have planned
C. have been planning
D. had planned

能调节进入眼内光线量的结构是E．

The word "diversity" (Para. 1 and Para. 6) most probably means______.

A. background
B. influence
C. variety
D. significance

A．UponB．InC．OfD．At

A. Upon
B. In
C. Of
D. At