Directions：In this part，there is a passage with 15 blanks.For each blank there are 4 choices marked A，B，C and D.Choose the best answer for each blank and mark the corresponding letter on your ANSWER SHEET with a single line through the center .

　　Most people who travel long distances complain ofjetlag(喷气飞行时差反

　　应).Jetlag makes business travelers less productive and more prone 6l making mistakes.It is actually caused by disruption of your‘'body clock” a small cluster of brain cells that controls the timing of biological 62 .The body clock is de-signed for a一63一rhythm of daylight and darkness，so that it is thrown out of balance when it experiences daylight and darkness at the‘'wrong”times in a new time zone.The 64 ofjetlag often persist for days 65 the internal body clock slowly adjusts to the new time zone.

　　Now a new a_nti-jetlag system is 66 that is based on proven extensive pioneering scientitic research Dr.Martin Moore-Ede has devised a practical strategy to adjust the body clock much sooner to the new time zone 67 controlled exposure to bright light.The time zone shift is easy to

　　accomplish and eliminates 68 of the discomfort ofjetlag.

　　A succesful time zone shift depends on knowing the exact times to either 69 or avoid bright light.Exposure to light at the wrong time can actually make jetlag worse.The proper schedule 70 light exposure depends a great deal 011 7l travel plans.Data on a specific flight itinerary(旅行路线)and the individual’s sleep 72 are used to produce a Trip Guide with 73 .on exactly when to be exposed to bright light.

　　Whell the Trip Guide calls 74 bright light you should spend time outdoors if possible.If it is dark outside，or the weather is bad， 75 you are on an aeroplane，you Carl use a special light device to provide the necessary light stimulus for a range of activities such as reading，watching TV or working.

　　61.A.for B.from C.to D.of

　　62.A.actions B.Functions C.reflection D.behavior

　　63.A.regular B.formal C.continual D.circular

　　64.A.diseases B.symptoms C.Sings D.defects

　　65.A.While B.Where C.if D.although

　　66.A.adaptable B.approachable C.available D.agreeable

　　67.A.at B.through C.acailable D .agreeable

　　68.A.most B.least C.Little D.more

　　69.A.artain B.shed C.retrieve D.seek

　　70.A.on B.with C.for D. in

　　71.A.unique B.Specific C. Complicated D .peuliar

　　72.A.Norm B .instructions C .pattern D.style

　　73.A.directories B.insructions C.Specifications D. commentaries

　　74.A.Off B.on C .for D.up

　　75.A.or B .and C .but D .while