问题
单项选择题
伞形花内酯是（）
A．简单香豆素类
B．黄酮类
C．吡喃香豆素类
D．二氢黄酮类
E．其他香豆素类
答案
参考答案：A
搜题请搜索小程序“爱下问搜题”
伞形花内酯是（）
A．简单香豆素类
B．黄酮类
C．吡喃香豆素类
D．二氢黄酮类
E．其他香豆素类
参考答案：A
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| Dear Editor, I am a reader of your magazine and I need help. I am very 1 these days because I have some problems with my new school. I am a Grade 8 student. I just moved to Beijing with my parents two months ago. Now, I am 2 at a new secondary school in Sunshine Town. It is bigger than my old school. I do not know the new school very well 3 I have no friends here. I do not know 4 to talk to my new classmates. 5 , I am very nervous and I cannot answer their questions. I feel really uncomfortable when they talk to me. 6 lunchtime, I always sit alone in the playground and 7 books. I hope they will not 8 because I feel so shy when they try to talk to me. I 9 my old classmates very much, but I really want to make friends with my new classmates. I do not know what to do. I hope you 10 give me some advice. Cindy | ||||
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