单项选择题

The teachers mainly teach ______ in universities.

A．Biology and Mathematics
B．Biology and Physics
C．Mathematics and Physics
D．Physics and Chemistry
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单项选择题
Which of the following is NOT true for each of the five winners
A．Won a trip to a fair held in Portland, Oregon.
B．Received more than three-thousand dollars.
C．Will be able to request up to ten-thousand dollars for their program.
D．Could be a member of Intel Company.
单项选择题
How many high school students are presenting science projects in Portland this week
A．One hundred.
B．Several hundred.
C．One thousand.
D．Several thousand.
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