单项选择题
1、Where _____ cotton ______?
A．are, produced
B．are, grown
C．is, grown
D．are made in


2、
A．A
B．B
C．C
D．D


3、You must keep your eyes ________.
A．closed
B．close
C．be closed
D．to closed


4、—What‘s the time， please？
—It‘s _______.
A．nine thirty-five
B．forty-eight past six
C．fifty-five to four  
D．thirty-one two


5、January is _______ month of the year.
A．one 
B．the one
C．first
D．the first


6、


填空题
7、


简答题
8、(本小题满分12分) 首项为25的等差数列，其前9项的和等于前17项的和，问这个数列前多少项的和？

9、

10、

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