单项选择题

A．It increased the students’ white blood cell count.
B．It increased some students’ energy level.
C．It improved the students’ ability to play musical instruments.
D．It released a natural painkiller in some students’ bodies.
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单项选择题
A．The graduate students could understand the lecture.B．The undergraduate students could understand the lecture.C．Both the undergraduate and the graduate students understand the lecture.D．Neither the undergraduate nor the graduate students could understand the lecture.
A．The graduate students could understand the lecture.
B．The undergraduate students could understand the lecture.
C．Both the undergraduate and the graduate students understand the lecture.
D．Neither the undergraduate nor the graduate students could understand the lecture.
单项选择题
A．He feels rushed.B．He hates to pack.C．He doesn’t like to restrict his diet.D．He’s worried about his lecture.
A．He feels rushed.
B．He hates to pack.
C．He doesn’t like to restrict his diet.
D．He’s worried about his lecture.
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