单项选择题

Questions 18～21 are based on the following talk of a lab instructor. What will the students probably do after the talk

A．Leave the room.
B．Hand in their lab notebooks.
C．Go to Professor Kaplan’s office.
D．Work on an experiment.
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单项选择题
What is Marta afraid of
A．She is afraid that John will forget all about her once he leaves.
B．She is afraid that John will never come back once he leaves.
C．She is afraid that John will come back once he leaves.
D．All the above.
单项选择题
What does the woman mean
A．The deadline is drawing near.
B．She can’t meet the deadline.
C．She turned in the proposals today.
D．They are two days ahead of time.
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