吸入型福莫特罗与吸入型沙美特罗相比的特点是（）
A.起效快
B.起效慢
C.作用时间长
D.作用时间短
参考答案：A
My birthday is on the of November. [ ]
A. twelve
B. twelveth
C. twelfth
Some children don't like dogs because they____. [ ]
A. look beautiful .
B. are friendly
C. look scary
D. are boring and trendy
