毛果芸香碱可产生下列哪种作用（）
A.近视、散瞳
B.远视、缩瞳
C.近视、缩瞳
D.远视、散瞳
E.以上都是
参考答案：C
, I lost heart in English learning, but my teacher often said to me, "Keep on studying hard ,
and you'll succeed ."[ ]
A. At one time; in time
B. At one time; on time
C. At a time; in time
D. At a time; on time
“商女不知亡国恨，隔江犹唱后庭花”出自于杜枚的（）
A.泊秦淮
B.阿房宫赋
C.郡斋独酌
D.雪中书怀
