单项选择题

A．It increased the students’’ blood pressure.
B．It increased some students’’ energy level.
C．It released a natural painkiller in some students’’ bodies.
D．It improved the students’’ ability to play musical instrument s.
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单项选择题
What is the passage mainly about
A．Science teachers to ban testing harmful to animals.
B．Teachers’’ policy change in experiment on animals.
C．The new policies of banning harmful experiments to animals.
D．The importance of prohibiting harmful experiments on animals.
单项选择题
A．It was easy to ship from England.B．Horses occasionally ate it if there was no grain available.C．People took it with them when they traveled.D．It was easy to prepare over an open fire in the forests.
A．It was easy to ship from England.
B．Horses occasionally ate it if there was no grain available.
C．People took it with them when they traveled.
D．It was easy to prepare over an open fire in the forests.
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