单项选择题


Section A

A．She hasn’t heard from the teacher for three days.
B．They have extra time to complete the assignment.
C．She just found out the medical paper three days ago.
D．They won’t see the teacher until three days later.
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单项选择题
What are the automobile engineers trying to do
A．Improve the batteries of electric cars.
B．Increase the number of electric cars.
C．Design a new device for electric cars.
D．Look for new ways to improve safety.
单项选择题
A．reducingB．decliningC．burningD．increasing
A．reducing
B．declining
C．burning
D．increasing
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