【单选题】
Itwasveryhotyesterday,butitis _______today.
【单选题】
The flower is dead. I ____ it more water. ?
【单选题】
If a substance is dissolved in water or heated, it
may ____ a gas.
【单选题】
13.Oil floats if you ______it on water.
【单选题】
Man________die without air or water.
【单选题】
I ___________ a short rest before we continue the work.
【单选题】
It was very hot yesterday, but it is ______ today.
【单选题】
FOR与NEXT指令总是成对使用的,FOR指令应放在NEXT的后面。
【单选题】
15.Man _____ die without air or water.
【单选题】
Water_________ both by man and other living things.