单项选择题

A. We should not believe what we see or hear.
B. Things moving downward are more noticeable.
C. People often have wrong concepts about ordinary phenomenon.
D. Adults are not as good as children in observing certain natural phenomena.
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单项选择题
A. Buy a new dictionary for herself. B. Take the dictionary out the library.C. Borrow the dictionary for herself. D. She is welcome to the library.
A. Buy a new dictionary for herself.
B. Take the dictionary out the library.
C. Borrow the dictionary for herself.
D. She is welcome to the library.
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