C. convert fuel into exhaust3. A car uses a four-stroke engine. The four strokes are .A. intake, compression, ignition and exhaustB. injection, rotation, ignition and exhaustC. injection, carburetion, rotation and exhaust4.With the at the bottom of the cylinder, the exhaust valve opens to allow the burned exhaust gas to be expelled to the exhaust system.A. pistonB. valveC. camshaftD.crankshaft5.According to the method of ignition of the air-fuel mixture, engines are divided into .A. gas engine and steam engineB. gasoline engine and diesel engineC. external combustion engine and compression ignition engineD. internal combustion engine and diesel engine6.What is the core of a car’s engine?A. The cylinderB. The spark plugC. Windshield-washer fluidD.Exhaust7.Which statement about cylinder head is fault?A. The cylinder head is bolted to a very flat surface above the cylinder portion of the block.B. The cylinder head is cast into one piece from iron only.C. The cylinder head forms the upper portion of the combustion chamber.D. The cylinder head is used to hold the valves, and it has ports to allow air, fuel and exhaust to move through the engine.8. The crankshaft and connecting rod converts energy intoenergy used to drive the vehicle.B. mechanical, thermalD. mechanical, kinetic9. What causes a car to burn and lose oil?B. Radiator troubleC. A failing exhaust systemScreened intake B. oil filter C. oil pump D.oil pressure. Reading Comprehension （20分）Task 1After reading the following passage, make the correctA computer is a machine designed to perform work mathematically andor electronic means. These machines can do a great deal of Its percentage of error is about one in a billion digits. It has been The heart of an electronic computer lies in its vacuum tubes, or to solve can be solved by a computer in one minute, but in order to work properly, a computer must be given instructions and it must be programmed. Computers can be designed for many specialized purposes. They can be used to prepare patrols, guide airplane flights, direct traffic, even to play chess. Computers play an important role in automation process in plants and factories throughout the world.1.A computer is a machine designed to ______________________.A.perform work mathematicallyB.perform complicated calculationsC.store and select informationD.all of the above2.The speed with which an electronic computer works depends on its________________A.electronic circuitsB.programmerC.vacuum tubes or transistorsD.instructions3.According to the passage, computer play an important role in__________________A.automation processesB.mathematical computationsC.traffic controlD.the development of mathematical theory4.The use of computers for specialized purpose depends on the___________________A.design of the computerpower used to operate the computerdifficulty of the mathematical calculations involvedthe ability of the programmerThe passage implied that human beings differ from computers in that human beings ______________make fewer mistakesdo not have to be programmedwork more quicklyunderstand their instructionsTask 2Directions:After reading the passage, complete the statements.When Abraham Lincoln was young he worked in a store. As a clerk he articles(杂货). They added up to two dollars and six cents, or the小事)，and many clerks would dismissed it as such. But Abraham was too conscientious(认真的) to“The money must be paid back,” he decided. This would have been easy had the woman lived just round the corner, but, as the young man she lived between two and three miles away. This, however, did not to the residence of his customer. Having arrived there, he explained the matter, paid over the six cents, and returned satisfied.6. What did Abraham do when he was young?He worked as a clerk in_________________________.7. What did the woman buy?The woman bought ____________________________.8. How did he feel after he found that he had made the woman pay six cents too much?He felt ___________________________________________.9. The woman lived between____________________ miles away.10. What did Abraham do after he arrived at the residence of the woman？He explained the matter, __________________the six cents, and returned satisfied.四. Translate the following sentences into English (20分)1.今天的普通汽车由超过15000个独立的、单个的的零部件组成,这些零部件必须一起工作。
