1、t can we learn about the worms in the study?A. They take plastics as their everyday food.B. They are newly evolved creatures.C. They can consume plastics.D. They wind up in landfills.44. According to Jennifer DeBruyn, the next step of the study is to .A. identify other means of the breakdownB. find
2、out the source of the enzymeC. confirm the research findingsD. increase the breakdown speed45. It can be inferred from the last paragraph that the chemical might .A. help to raise wormsB. help make plastic bagsC. be used to clean the oceansD. be produced in factories in future46. What is the main pu
3、rpose of the passage?A. To explain a study method on worms.B. To introduce the diet of a special worm.C. To present a way to break down plastics.D. To propose new means to keep eco-balance.DPreparing Cities for Robot CarsThe possibility of self-driving robot cars has often seemed like a futurists dr
4、eam, years away from materializing in the real world. Well, the future is apparently now. The California Department of Motor Vehicles began giving permits in April for companies to test truly self-driving cars on public roads. The state also cleared the way for companies to sell or rent out self-dri
5、ving cars, and for companies to operate driverless taxi services. California, it should be noted, isnt leading the way here. Companies have been testing their vehicles in cities across the country. Its hard to predict when driverless cars will be everywhere on our roads. But however long it takes, t
6、he technology has the potential to change our transportation systems and our cities, for better or for worse, depending on how the transformation is regulated.While much of the debate so far has been focused on the safety of driverless cars(and rightfully so), policymakers also should be talking abo
7、ut how self-driving vehicles can help reduce traffic jams, cut emissions(排放) and offer more convenient, affordable mobility options. The arrival of driverless vehicles is a chance to make sure that those vehicles are environmentally friendly and more shared.Do we want to copy or even worsen the traf
8、fic of today with driverless cars? Imagine a future where most adults own individual self-driving vehicles. They tolerate long, slow journeys to and from work on packed highways because they can work, entertain themselves or sleep on the ride, which encourages urban spread. They take their driverles
9、s car to an appointment and set the empty vehicle to circle the building to avoid paying for parking. Instead of walking a few blocks to pick up a child or the dry cleaning, they send the self-driving minibus. The convenience even leads fewer people to take public transport an unwelcome side effect
10、researchers have already found in ride-hailing(叫车) services.A study from the University of California at Davis suggested that replacing petrol-powered private cars worldwide with electric, self-driving and shared systems could r2.1 流动资金占比 22.38% 3 收入万元 46877.00 4 总成本万元 36550.38 5 利润总额万元 10326.62 6 净利润万元 7744.97 7 所得税万元 1.40 8 增值税万元 1424.36 9 税金及附加万元 406.19 10 纳税总额万元 4412.21 11 利税总额万元 12157.17 12 投资利润率 48.51% 13 投资利税率 57.11% 14 投资回报率 36.38% 15 回收期年 4.25 16 设备数量台（套） 147 17 年用电量千瓦时 494461.18 18 年用水量立方米 28100.08 19 总能耗吨标准煤 63.17 20 节能率 21.27% 21 节能量吨标准煤 25.80 22 员工数量人 746 泓域咨询MACRO/ 拖布盆项目立项申请
