单项选择题

The oldest documented age for a redwood tree is approximately________.

A．350 years
B．400 years
C．800 years
D．2,000 years
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单项选择题
The speaker felt ________when his father asked him to help cut grass.
A．anxious and worried
B．proud and excited
C．nervous and confused
D．inspired and confident
单项选择题
The conversation probably takes place in_______.
A．a library.
B．a bookstore.
C．the classroom.
D．a department store.
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