单项选择题

What does the woman's response imply

A．Frank's experiment was difficult at first.
B．Frank didn't succeed in his experiment.
C．Frank has turned his experiment down.
D．Frank had trouble all through the procedures.

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热门试题

单项选择题

What does the woman mean

A．It is really nice to change it.
B．It has been used for a long time.
C．It is still in good condition.
D．It ought to be replace

单项选择题

What are they talking about

A．A damaged plane.
B．A probable happening.
C．An imagined accident.
D．An aircraft clas