完形填空DCHiltonwasoneofthefirstAmerican

完形填空DC Hilton was one of the first Americans to find out that there was money to be made in the middle of the night.42 years ago he bought a small restaurant on US highway 69,in Oklahoma.His main customers were truck drivers and 1lsalesmen who drank coffee and ate cheeseburgers when they stopped to2their journey.It was they who first tried to persuade Hilton to remain open all night.He thought about it for a while,and then suddenly made up his mind.He took the door key and threw it across the road.He hasn't closed the door3. Over the years his simple burger cafe has expanded into a 24-hour roadside empire,with a 100-seat restaurant,a petrol station,a mini shopping market,a car park4mobile homes(活动住房) and all night self-help laundry.Hilton was a pioneer in a 24-hour5which has now caught on around the world.Today not only restaurants but also banks,supermarkets,mail order firms,travel agencies and many other businesses are6to be open all night. 7is this really a good thing?A lot of research has been done in America on the effect of 24-hour working, andthere is growing8about the long-term dangers of a society that doesn't sleep.Americans are said to be sleeping 20% less than they did 100 years ago,and 55% claim to suffer at least occasionally from over-tiredness. 9of the worst man made disasters happened in the last few hours before dawn ,when even the most experienced night-worker has difficulty10awake.1.A.travellingB.walkingC.enteringD.ing2.A.startB.continueC.breakD.enjoy3.A.everB.sinceC.laterD.then4.A.onB.atC.ofD.for5.A.working trendB.touring businessC.banking serviceD.delivering system6.A.performingB.pretendingC.beginningD.hesitating7.A.ThusB.AndBut D Furthermore8.A.concernB.understandingC.interestD.sense9.A.FewB.SeveralC.NoneD.All10.A.preservingB.beingC.maintainingD.staying