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century.century.
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更多“The blues music was created in the beginning of the 19 century.”相关的问题
| 阅读理解。 |
| A device that stops drivers from falling asleep at the wheel is about to undergo testing at Department of Transport laboratories and could go on sale within 12 months. The system, called driver Alert, aims to reduce deadly road accidents by 20%-40% that are caused by tiredness. Airline pilots can also use it to reduce the 30% of all pilot-error accidents that are related to fatigue. Driver Alert is based on a computerized wristband. The device, worn by drivers or pilots gives out a sound about every four minutes during a car journey. After each sound the driver must respond by squeezing the steering wheel (方向盘). A sensor in the wristband detects this pressing action and measures the time between the sound and the driver's response. Tiredness is directly related to a driver's response time. Usually, a watchful driver would take about 400 milliseconds to respond, but once that falls to more than 500 milliseconds, it suggests that the driver is getting sleepy. In such cases the device gives out more regular and louder sounds, showing that the driver should open a window or stop for a rest. If the driver's response continues to slow down, the sounds become more frequent until a nonstop alarm warms that the driver must stop as soon as possible. The device has been delivered to the department's laboratories for testing. If these tests, scheduled for six months' time, are successful, the markers will bring the product to market within about a year. |
| 1. According to the text, Driver Alert ______. |
| A. aims to reduce tiredness-related accidents B. has gone through testing at laboratories C. aims to prevent drivers from sleeping D. has been on sale for 12 months |
| 2. How should a driver respond to the sounds from Driver Alert？ |
| A. By sounding a warning B. By touching the wristband C. By checking the driving time D. By pressing the steering wheel |
| 3. We can learn from the text that the driver needs to stop for a break when his response time is ______. |
| A. About 400 milliseconds B. below 500 milliseconds C. over 500 milliseconds D. about 400 minutes |
| 4. When the driver gets sleepy while driving, Driver Alert ______. |
| A. moves more regularly B. stops working properly C. opens the window for the driver D. sounds more frequently and loudly |
A、At the beginning of the 20th century.
B、In the 1930s.
C、At the end of World War II.
D、In the 1960s.
A、It was a mere piece of decoration.
B、It was the work of a famous artist.
C、It was designed to let out extra smoke.
D、It was easily identifiable from afar.
__12__on I went for a year to the City Zoo, as a student__13__, to get experience of the large animals, such as lions, bears, bison and ostriches,__14__were not easy to keep at home. When I left, I_15___ had enough money of my own to be able to__16__my first trip and I have been going ___17_ever since then. Though a collector"s job is not an easy one and is full of_18___ ,it is certainly a job which will appeal__19__all those who love animals and__20__ .
1.A.how B.where C.when D.whether
2.A.region B.field C.place D.area
3.A.clearness B.emotion C.feeling D.affection
4.A.except B.but C.except for D.but for
5.A.recite B.recognize C.read D.repeat
6.A.volume B.noise C.voice D.pitch
7.A.close B.shut C.stop D.comfort
8.A.grew B.was growing C.grow D.grown
9.A.many B.amount C.number D.much
10.A.living B.seeing C.liking D.exploring
11.A.increase B.include C.add D.enrich
12.A.later B.further C.then D.farther
13.A.servant B.keeper C.member D.assistant
14.A.who B.they C.of which D.which
15:A successfully B. gladly C. nearly D. luckily
16.A.pay B.finance C.allow D.provide
17.A.normally B.often C.usually D.regularly
18.A.unhappiness B.sorrows C.excitement D.disappointments
19.A.for B.with C.to D.from
20.A.voyage B.travel C.journey D.Trip
A、is
B、were
C、are
D、was
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