对于化学反应3W(g)+2X(g)=4Y(g)+3Z(g),下列反应速率关系中,正确的是
It’s high time you had your hair cut ; it’s getting _______ .
My friend showed me round the town, ______ was very kind of him.
They use computers to keep the traffic _______ smoothly.
If you leave the club, you will not be_____back in .
What I need is_____ book that contains ______ABC of oil painting.