糖皮质激素对下列何种化学介质的生成和释放具有抑制作用（）
A.前列腺素
B.白三烯
C.5-羟色胺
D.缓激肽
E.肾上腺素
参考答案：A, B, C, D
I hear the girl wearing glasses is your new classmate. She plays the violin quite well, _______?
A. isn’t she B. don’t she C. doesn’t she
