单项选择题

Every chemical change either results from energy being used to produce the change, or causes the energy to ________ in some form.

A. give off
B. put out
C. set off
D. use up
<上一题 目录 下一题>
热门 试题

单项选择题
Mary caught ______ last week, and she is suffering from ______ now.
A. a bad cold; a pneumonia
B. bad cold; pneumonia
C. a bad cold; pneumonia
D. bad cold; a pneumonia
单项选择题
As for the winter, it is inconvenient to be cold, with most of _______ furnace fuel is allowed saved for the dawn.
A. what
B. that
C. which
D. such
相关试题