单项选择题

According to the passage, it is possible for us to tell one type of person from another because()

A. people differ in their behavioral and physical characteristics
B. human fingerprints provide unique information
C. people’s behavior can be easily described in words
D. human faces have complex features

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单项选择题

What does the American team plan to do on the trip up the mountain()

A. To make Everest even cleaner than it was.
B. To tell climbers not to leave waste materials.
C. To take away all the trash they could find there.
D. To collect and treat human waste before the ice melted.

单项选择题

According to the author of the passage, ()

A. life is really a long journey of joy for rich children
B. the rich children feel greatly satisfied with the property they inherit from their parents
C. it is most important for wealthy parents to make sure that their families are rich in love as well as in money
D. today all the wealthy parents are sure of the problems their money can bring