1：2=______：3=______÷6=______（用小数表示比值）．
1：2=1.5：3=3÷6=1.5；
故答案为：1.5，3，0.5．
The firm was badly in ______need of a manager with ______better command of French.
A．a; /
B．the; a
C．/;a
D．/;the
If you work hard,you can improve .[ ]
A.yourself
B.by yourself
C.himself
D.by himself
