单项选择题

A．Their lack of concentration resulting from mental stress.
B．The lack of consideration for them in equipment design.
C．The probability of their getting excited easily.
D．Their slowness in responding.
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单项选择题
A．Get some coins at the cafe.B．Buy her a cup of coffee at the cafe.C．Get some coffee from the machine.D．Try to fix the machine.
A．Get some coins at the cafe.
B．Buy her a cup of coffee at the cafe.
C．Get some coffee from the machine.
D．Try to fix the machine.
单项选择题
A．The actors and actresses are not paid for their performance.B．The actors and actresses only perform in their own communities.C．They exist only in small communities.D．They only put on shows that are educational.
A．The actors and actresses are not paid for their performance.
B．The actors and actresses only perform in their own communities.
C．They exist only in small communities.
D．They only put on shows that are educational.
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