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【单选题】
We hear it a lot the news these days: 'Recycle newspapers and save a tree. Collect bottles and cans so they can be reused in the manufacturing of new products.' Protecting our delicate environment seems to be on the agenda of politicians, government leaders, and citizens in many parts of the world to show support for mother nature. The concept of green consumerism has gained momentum more and more over the last decade, and the public feels moved to pitch in and help. However, three essential keys needed to power this movement include a more informed public, the development of improved technology, and a greater demand for recycled materials. Let's use paper as an example. The first step is to raise public awareness about the recycling process, explain the kinds of materials that can be recycled, and provide ways on how to properly dispose of them. Local governments should educate the public on how to properly sort reusable materials from those, like waxed paper, carbon paper, plastic laminated material such as fast food wrappers, that can't be recycled very easily. Then, a system of collecting these sorted materials needs to be established. Public interest might be there, but may soon wane if recycling centers located in convenient locations are not available. Sometimes we become complacent when it comes to recycling, but when you speak in terms of actually facts and figures that everyone can understand, people become more cognizant of the problem. I remember reading one time that the energy saved from one recycled can provide enough power to operate a television set for three hours. Give the public information they can grasp in real terms, and then you will increase your chances of gaining followers. Second, technological progress has been made on many fronts, but governmental agencies need to step up their support for companies involved in recycling by providing tax incentives, low - cost loans, or even grants to upgrade equipment and to encourage further research. One breakthrough has been the development of a new manufacturing process that uses enzymes to help remove ink from paper in more energy efficient and environmentally safe methods. Recycling paper materials can be expensive in both monetary and environmental terms. The difficulty in removing print from paper, the amount of energy expended during the process, and caustic waste that is sometimes produced are costs that companies incur that are then passed onto the consumer. The final key is to increase demand for the growing surplus of resources waiting to be recycled. This problem has appeared in various regions of the world where the technology to process the used materials lags far behind the amount being collected for recycling. There may be a great outpouring of support yet the great stumbling block to implementing the second stage of this plan could be thwarted by the corporate sector's inability to find commercial enterprises interested in using recycled goods especially when the cost of exceeds those of virgin materials. Recycling is a crucial link protecting our planet. The three keys mentioned are important to achieving this end. What would be the best title for this passage?
A.
Important Keys to Recycling Paper
B.
Technological Advances Improve Recycling
C.
Steps to Improving Recycling
D.
Best Ways to Protect Our Environment
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举一反三
【单选题】下列数中最大的是(  )
A.
4 9
B.
1.9
C.
99.9%
【多选题】汇率的标价方法中,在直接标价法下汇率越高,______。
A.
表明单位外币所能换取的本币越多
B.
表明单位本币所能换取的外币越多
C.
意味着本币的币值越低
D.
意味着本币的币值越高
E.
意味着外币的币值越低
【单选题】下列数中最大的是______。
A.
1101101B
B.
110D
C.
6CH
D.
1570
【多选题】根据情绪的发生强度、持续性和紧张度不同,可以把情绪状态分为三种基本形式。下列选项中属于情绪基本形式的是( )。
A.
心境
B.
激情
C.
愤怒
D.
应激
【单选题】船舶纵倾后浮心向( )移动
A.
船中
B.
中前
C.
中后
D.
倾斜方向
【单选题】适用于下肢风寒湿痹的是
A.
独活
B.
威灵仙
C.
羌活
D.
乌梢蛇
【多选题】进度计划执行中的跟踪检查途径主要有( )。
A.
加工处理实际进度数据
B.
实地检查工程进展情况
C.
定期召开现场会议
D.
定期收集进度报表资料
E.
定期比较实际进度与计划进度
【多选题】如图所示,光滑斜面PMNQ的倾角为θ=30°,斜面上放置一矩形导体线框abcd,其中ab边长L 1 =0.5m,bc边长为L 2 ,线框质量m=1kg、电阻R=0.4Ω,有界匀强磁场的磁感应强度为B=2T,方向垂直于斜面向上,ef为磁场的边界,且ef//MN.导体框在沿斜面向上且与斜面平行的恒力F=10N作用下从静止开始运动,其ab边始终保持与底边MN平行.已知导线框刚进入磁场时做匀速运动,且进入...
A.
导线框进入磁场时的速度为2m/s
B.
导线框bc边长为L 2 =0.1m
C.
导线框开始运动时ab边到磁场边界ef的距离为0.4m
D.
导线框进入磁场的过程中产生的热量为1J
【单选题】信息收集的主要途径有( )。 1查找现有数据 2调查研究 3实验观察 4计算推理
A.
①②③④
B.
①②③
C.
②③
D.
①④
【多选题】收集数据的途径主要有( )
A.
组织自己的工作组
B.
委托专门的提供工作的机构。
C.
随便找些人组成工作组
D.
以上都是
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