单项选择题

A．Some students just give up on their classes.
B．A positive attitude is the key to success in college.
C．The survey may be unscientific.
D．It is important to educate college students.
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单项选择题
A．It becomes bigger.B．It becomes more expensive.C．It becomes cheaper.D．It becomes much safer.
A．It becomes bigger.
B．It becomes more expensive.
C．It becomes cheaper.
D．It becomes much safer.
单项选择题
A．It is a strong plant but can be easily bent.B．It has many joints.C．It has a delicate fragrance.D．It can be easily planted.
A．It is a strong plant but can be easily bent.
B．It has many joints.
C．It has a delicate fragrance.
D．It can be easily planted.
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