题目

14.如图所示，厚壁容器的一端通过胶塞插进一支灵敏温度计和一根气针，另一端有个用卡子卡住的可移动胶塞。用打气筒慢慢向容器内打气，使容器内的压强增大到一定程度，这时读出温度计示数。打开卡子，胶塞冲出容器口后A.温度计示数变大，实验表明气体对外界做功，内能减少 B.温度计示数变大，实验表明外界对气体做功，内能增加 C.温度计示数变小，实验表明气体对外界做功，内能减少 D.温度计示数变小，实验表明外界对气体做功，内能增加Saving water is an important part of going green. As water becomes less and polluted more, conservation (保护) becomes more and more important. The less water you use, the less wastewater will end up in our rivers and lakes. Wasting water means that more water needs to be treated and cleaned, a process that requires quite a lot of energy.As it is said above, cutting down on water usage is one of the most important things you can do for your local environment and the planet as a whole. That is why more green households are going blue: cutting down their water footprint by conserving and harvesting (收获) water.It may seem like a big concept, but going blue starts with small changes that everyone can make. Something as simple as turning off the tap while you brush your teeth can save a lot of water. Wash your fruits and vegetables in a bowl rather than under a tap to save even more. Make sure that the taps are fully turned off every time you step away from the sink or the shower — all those little drips can add up to a lot of water waste.Another way of reducing your water footprint is reducing your dependence on the main water supply. Rainwater harvesting can meet a lot of your home’s water needs. Many of us already practice rainwater harvesting in a small way. Collecting water from your gutters (檐沟) is a great way to keep your garden green without running the sprinkler (洒水器)1.The underlined word “green” means ______ in this passageA.嫉妒B.环保C.未成熟的D.健康的2.According to the passage, which is NOT the reason that people should save water?A.Treating wastewater needs much energyB.The water on the earth is becoming less and lessC.The water on the earth is becoming polluted moreD.Rainwater harvesting can meet a lot of your home’s water needs3.According to the passage, all of these can be used to save water except ______A.washing fruit and vegetables under a tapB.using a bowl to wash your fruit and vegetablesC.making sure taps are fully turned off all the timeD.turning off the tap every time after brushing your teeth4.Which of the following is the best title of this passage?A.Save Water by Turning off the TapB.How to Treat and Clean WastewaterC.Keep Your Garden Green with RainwaterD.Save Water Starting with Small Changes5.From the passage, we can know that_____A.we can get enough water by harvestingB.most people pay no attention to saving waterC.we can practice rainwater harvesting in a small wayD.harvesting water is more necessary than conserving it