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．It was interesting.B．It was funny.C．It was boring.D．It was terrible.
A．It was interesting.
B．It was funny.
C．It was boring.
D．It was terrible.
单项选择题
A．By credit card.B．By traveler’’s checks.C．By a check with a banker’’s card.D．In cash.
A．By credit card.
B．By traveler’’s checks.
C．By a check with a banker’’s card.
D．In cash.
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