Effective environmental protection laws and other measures have led to the improvement of water quality in Tai Hu lake in prefix = st1 /JiangsuProvince. The news was announced by officials from the provincial environmental protection bureau, which has just conducted an inspection of the lake area.  By the end of September, about 80 per cent of industrial pollutants met required standards and the lake is expected to be cleaner by the end of the year, officials said.  According to targets set by the State Environmental Protection Administration, all polluting enterprises must meet set standards by the end of this year or they will be shut down. The Taihu Lake area, which surrounds the cities of Suzhou, Wuxiand Changshou, is one of the most economically developed areas in the country and has long enjoyed a reputation as the "land of fish and rice" However, the quality of water in the lake has been deteriorating at an alarmingly rate in recent years, which has caused concern from the government and local people.  Pollution is so high mainly because people do not have enough environmental awareness and have put economic benefits ahead of their surroundings. Economic development in the area has been rapid with hundreds of factories being built. But officials say most of these do not have the anti-pollution equipment or measures they should have.  Because of the lack of waste treatment facilities, wasted water and other rubbish from residential areas in nearby towns and villages flow into rivers which are connected to TaihuLake. This also contributed to the lake's pollution.  Realizing the seriousness of the situation, the provincial and local governments began to tackle the problem.  Experts were invited to offer suggestions and laws and regulations were issued. All newly built factories and enterprises in the lake area were required to install necessary anti-pollution facilities before they can go into operation. Also, some wasted water treatment works will be built in the three cities. After reading the text, we can learn that  _  . A) the economy development will do harm for the environment B) we can not avoid polluting if we wish to develop our economy. C) only the experts can deal with the pollution D) pollution can't be the result of the economy development
D
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The vast jungles of the Amazon rainforest are home to tribes   mostly isolated from the outside world, whose way of life, largely unchanged for hundreds of years, is now increasingly threatened by modern civilization. Now, scientists discover they can monitor these "uncontacted tribes" using satellites, which would allow inexpensive and safe tracking of these tribes in order to protect them from outside threats. In order to help preserve these uncontacted Indians, researchers need accurate estimates of their populations. One way to collect this data involves flying over their villages, but such over-flights are both expensive and could fill these native peoples with fear. Another strategy involves meeting individuals on the ground, but among other risks, scientists could accidentally spread disease to members of the tribes. Instead, scientists investigated whether satellite images could monitor uncontacted tribes. The result was inspiring. They confirmed their locations and measured the sizes of their village, houses and gardens. "We can find isolated villages with remote sensing and study them over time." Walker told Live Science. "We can ask: Are they growing? Do they move?" Surprisingly, based on the sizes of the houses and villages, the scientists find the population densities of these isolated villages are about 10 times greater, on average, than other villages of native Brazilian peoples. This may be due to the fact that they have to live closer together because they are not as good at clearing the forest, since they lack modern devices like chainsaws and tractors, the researchers said. The tribes may also be afraid of spreading out due to fear of being attacked by outsiders, Walker said. The researchers now plan to focus on 29 more isolated villages to "look at their ecology-- that is, distance from rivers and roads--and use this to model where else we can find more isolated villages," Walker said. Scientists don't want to meet the Indians on the ground due to the fear that   _  . A) they can't get accurate data B) they could pass disease to the Indians C) they will be attacked by the Indians D) they will catch disease from the Indians
B
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As they migrate  , butterflies and moths choose the winds they want to fly with, and they change their body positions if they start floating in the wrong direction. This new finding suggests that insects may employ some of the same methods that birds use for traveling long distances. Scientists have long thought that insects were simply at the mercy of the wind. Fascinating as their skills of flight are, migrating behavior has been difficult to study in   insects because many long distant trips happen thousands of feet above ground. Only recently have scientists developed technologies that can detect   such little creatures at such great heights. To their surprise, though, the insects weren't passive travelers on the winds. In autumn, for example, most light winds blew from the east, but the insects somehow sought out ones that carried them south and they positioned themselves to navigate directly to their wintering homes. Even in the spring, when most winds flowed northward, the insects didn't always go with the flow. If breezes weren't blowing in the exact direction they wanted to go, the insects changed their body positions to compensate  . Many migrating birds do the same thing. The study also found, butterflies and moths actively flew within the air streams that pushed them along. By adding flight speeds to wind speeds, the scientists calculated that butterflies and moths can travel as fast as 100 kilometers an hour. The findings may have real-world applications. With climate warming, migrating insects are growing in number. Knowing how and when these pests move could help when farmers decide when to spray their crops. According to the passage, the findings can  _  . A) increase insects in number B) instruct farmers when to spray C) prevent climate warming D) help protect insects
B
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Earlier this year,my oldest daughter got braces on her teeth,and let's just say she did not go quietly into that dentist's chair.Fear and hate pretty much describe the days leading up to her first appointment. So when she finally walked out with shiny teeth,a sore mouth and a broken spirit,I told her I was proud of her and took her to Ben &Jerry's for an ice cream reward.Two weeks later,we returned to the scene of the crime.The dentist spent about 45 seconds checking her teeth before sending her on her merry way.Before I could start the car, she was placing her ice cream order.She was shocked when I told her that she wasn't going to get a reward every time we get her teeth checked. Clearly,she's not alone.According to some parenting experts,kids are easily addicted to a benefit--producing system of parental rewards and bribes--it's not all ice creams,candies and cool toys.Some parents are offering their children prizes to just let them sit down and behave in a restaurant--or sleep in their own beds--or score a goal in the next soccer game. While the experts agree that occasional awards are okay, the danger lies in the system's overuse.Kids quickly gain a sense of entitlement ,where they come to expect a big reward for every good thing that they do,no matter how small.To keep things in check,experts say parents should reduce the number of rewards they offer,make sure rewards match the behavior and explain the real benefits of behaving for the sake of behaving. Have you used bribery or a reward system with your kids? Was it successful? Do your kids expect more because of that system? What does the author mean by saying"the scene of the crime"? A) He/she doubted whether the dentist was skilled. B) He/she felt very sorry for his/her daughter's illness. C) His/her daughter suffered a lot from her illness. D) His/her daughter had a bad feeling for the dentist's.

D
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