吸入气雾剂的微粒大多应在多少微米以下()
A.15μm
B.10μm
C.5μm
D.25μm
E.20μm
参考答案:C
It ____ that making a plan is easier than carrying it out.
A.was turned out
B.is turned out
C.has been turned
D.turns out
— Why do you like Sandy? — Because he is honest boy.
A.a
B.an
C.the
D./