哮喘发作时,对缓解支气管痉挛作用最快的是
A.茶碱
B.β2受体激动剂
C.色苷酸钠
D.异丙托溴铵
E.糖皮质激素
参考答案:C
The twins are so alike that no one can ________ one from the other. [ ]
A. divide
B. compare
C. judge
D. distinguish
“十二五”计划中合理配置社区服务设施的目标是力争到“十二五”期末,社区服务设施综合覆盖率达到()。
A.95%
B.70%
C.90%
D.80%