[单选题] When John left the office,Amy __ at her desk.

1、[阅读理解]What can be learned from the study?
A. Cats take food no matter who feeds them.
B. Cats refuse food from unhelpful strangers.
C. Dogs refuse food from those who anger them.
D. Dogs take food no matter how they are treated.

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2、[阅读理解]14
A. might not
B. might
C. must not
D. must

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3、[阅读理解]10
A. none :
B. everyone
C. anyone
D. someone

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4、[阅读理解]How does. exercise help the elderly?
A. By improving attention.
B. By slowing memory loss.
C. By connecting with others.
D. By controlling cell growth. .

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5、[阅读理解]What is implied in the last paragraph?
A. The Amazon rainforest may disappear soon.
B. The Amazon may take up more CO2 in the future.
C. The size of the Amazon basin may become smaller.
D. People may change the name of the Amazon River.

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