According to the author, which of the following reasons disrupt travelers’ sleep?A.Travelers try to sleep between 3-5 p.m.B.Travelers’ attention is reduced by 75 percentC.Travelers fly in the natural direction of their internal clock.D.The traveler’s internal clock has to adjust to patterns of light and activity.
My father used to ................the importance of learning English. (emphasis)A.emphasizeB.emphasesC.emphasizedD.emphasised
May Day is celebrated regularly in ............ countries. (society)A.socialistB.socialismC.socialD.society
According to the article, ________A.jet lag can affect different abilities differentlyB.flying seriously affects your judgment and decision-makingC.travelers complain about the negative effects of flyingD.various factors stop us sleeping when we fly
The direction you fly in_______A.extends or shrinks your body clockB.alters your body’s natural rhythmsC.helps the degree of jet lagD.affects the degree of jet lag
Jet lag______A.makes our body clock operate badlyB.causes our body clock to changeC.extends the hours of our body clockD.upsets our body’s rhythms
The main function of the body clock is to_____A.help us sleepB.help us adapt to a 24-hour cycleC.regulate the body’s functionsD.govern all the body’s responses
Jack made me ................ him next week.A.to promise to callB.promise to callC.to promise callingD.promise calling
Do you enjoy ................ other countries?A.visitB.to visitC.visitingD.visited
You................ to school if you want your health to be better tomorrow.A.don't goB.shouldn't goC.wouldn't goD.are going
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