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．Reading.B．Writing.C．Speaking.D．Listening.
A．Reading.
B．Writing.
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D．Listening.
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.
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