Most people who travel long distance
complain of jetlag. Jetlag makes business travelers less productive and more
prone (21) making mistakes. It is actually caused by
(22) of your "body clock" --a small cluster of brain cells
that controls the timing of biological (23) . The body clock
is designed for a (24) rhythm of daylight and darkness, so
that it is thrown out of balance when it (25) daylight and
darkness at the "wrong" times in a new time zone. The (26)
of jetlag often persist for days (27) the internal body
clock slowly adjusts to the new time zone. Now a new anti-jetlag syst A. actions B. functions C. behavior D. reflection 更多"Part Ⅱ ClozeDirections: Read the fo"的相关试题: [单项选择]Part Ⅱ Cloze Directions: Read the following passage. For each numbered blank there are four choices marked A, B, C and D. Choose the best one and mark your answers on ANSWER SHEET 1.
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