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问题 选择题
关于方程ax2=bx（a≠0）的解是（　　）
A．x=0B．x=
b
a
C．x=0或x=
b
a
D．x=-
b
a
答案

方程ax2=bx（a≠0），

移项得：ax2-bx=0，

分解因式得：x（ax-b）=0，

可得：x=0或ax-b=0，

解得：x1=0，x2=

b
a
．

故选C

填空题
用方框内的词或词组的适当形式填空。
look after, every day, eat, sports, never, usually, hardly ever, how often, how many, often, habit,
sometimes
1. —What         do you play?  
    —I usually play soccer.
2. —                  do you eat vegetables?  
    —Every day.
3. I          eat junk food. I can't stand it.
4. I think I'm kind of unhealthy. I                    exercise.
5. I drink milk                      . It's a good          .
6. Please help me                    my pet dog when I am on holiday.
7. I like action movies very much, so I          go to the movies with my friends.
8.                     students are there in your school?
9. What do you            do on weekends?
10. I like            fruit.
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名词解释

单位产权房
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