任意单质的标准摩尔生成热都为零。
A. 对
B. 错
Now English ( ) bu many people all over the world.
A. is spoken
B. was spoken
C. speaks
D. is speaking
The lost boy ( ) in the corner last night.
A. is found
B. finds
C. was found
D. found
Many houses () in the future.
A. built
B. are built
C. will be built
D. are building