主要用于预防支气管哮喘药物是
A.氨茶碱
B.肾上腺素
C.特布他林
D.色甘酸钠
E.异丙肾上腺素
参考答案:D
What does the speaker feel about summer pictures
A.Summer films might cause mental damage to the audience.
B.Summer films need to give due respect to the audience’s intelligence.
C.Summer films should cater to both children and grownups.
D.Summer films should not target at the mass-market.
()行驶的机动车,与对面来车有会车可能的,不得超车。
A.同车道
B.左右车道
C.快慢车道
D.其他