听对话,回答问题。
(1)
What is this competition about?
A . Saving energy at home.
B . Reducing noise pollution.
C . Using technology creatively.
(2)
What is the stone used for?
A . Starting the machine.
B . Increasing air pressure.
C . Producing carbon dioxide.
(3)
Why does the woman come to the man?
A . To discuss the way of writing a paper.
B . To find the right material for a model.
C . To study the approach to detailed drawings.
答案: C
A
B