题目

科学与技术一体化是当代科技革命的一个显著特点，主要是指科学越来越离不开技术的支撑；同时技术也离不开科学理论的指导。科学与技术衔接后相互渗透、相互包含，以致融合成连续的整体。下列最能体现科学的指导作用的是（ ） A . 电磁感应现象的发现推动了发电机的发明 B . 电子显微镜的发明推动了微生物学的进步 C . “知识就是力量”的口号推动了科学的进步 D . 蒸汽机的发明使人类进入了“蒸汽时代”A kind of little cars may be seen in the streets in the future. People will like this kind of small cars better than the big ones. The car is as small as a bike. But it can carry two people in it. Everybody can drive it easily, just like riding a bike. Even children and old people can drive them to schools or parks.If everyone drives such cars in the future, there will be less pollution in the air. There will be more space for all the cars in cities, and there will also be more space for people to walk in the streets.The little cars of the future will cost less money to buy and to drive. These little cars can go only 65 kilometers an hour, so driving will be safer. The cars of the future will be fine for going around the city, but they will not be useful for a long trip.This kind of cars can save a lot of gas. They will go 450 kilometers, then they have to stop for more gas.They are nice cars, aren’t they? 【小题1】If you drive this kind of little cars for four hours, you can probably go      at most.  ?A．260 kilometersB．65 kilometersC．450 kilometersD．130 kilometers【小题2】Why do these little cars have to stop after going 450 kilometers??A．For more water.B．For more gas.C．To have a rest.D．To charge (充电)【小题3】 Which of the following statements is NOT true??A．Driving big cars can make the air dirtier.?B．The little cars can make more space for other cars and people.?C．These little cars will be useful for a long trip.?D．This kind of cars can save much gas.