属于原小檗碱型异喹啉类生物碱的是（）
A．麻黄碱
B．小檗碱
C．汉防己甲素
D．苦参碱
E．莨菪碱
参考答案：B
根据汉语完成下列句子
1. I spend all my _____ _____(闲暇时间) on football.
2. She _____(周游) the Asia when she was fourteen.
3. The boy began to go to school _____ _____ _____ _____(在……岁时) six.
4. Li Yundi won the first prize in the 14th Chopin _____ _____ _____(国际钢琴比赛)in Poland.
5. I didn't go to the music class _____ _____(由于)the heavy rain.
