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问题 单项选择题

盐酸乙胺丁醇的药用构型是

A．外消旋体

B．内消旋体

C．右旋体

D．左旋体

E．以上都不是

答案

参考答案：C

填空题
Read, choose and fill in the blanks. 用方框里的单词填空。
hard,  learn,  classmates,  go,  long,  
student,  nice,  like,  make,  music
Dear Rose,     
       How are things with you?        
       After a            summer holiday, it's time to             back to school. I'm a middle school             now. I'll 
have new teachers and            . I think they are all            and friendly. I hope I can             more (更多的) 
friends.              
       We are going to             many subjects this year, Chinese, math, English,             , art and so on. I            
Chinese best. I will study              on math. I want to do well in my new school.      
        Best wishes.  
                                                                                                                                 Yours,
                                                                                                                                  Lucy           
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选择题

---Did you return Helen’s call?  

---I didn’t need to _________I’ll see her tomorrow．

A．though

B．unless

C．when

D．because
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