汽油的牌号反映了汽油的什么指标及性能？
参考答案：
汽油的牌号反映了汽油辛烷值的指标。
肺经腧穴中，禁灸的是：（）。
A.少商
B.鱼际
C.经渠
D.孔最
E.尺泽
— The research on the new bird flu virus vaccme is challenging and demanding. Who do you think
can do the job?
— _____ my students have a try? [ ]
A. Shall
B. Must
C. Will
D. May
