Five years ago, David Smith wore an expensive suit to work every day. “I was a clothes addict,” he jokes. “I used to carry a fresh suit to work with me so I could change if my clothes got wrinkled.” Today David wears casual clothes—khaki pants and sports shirt—to the office. He hardly ever wears necktie. “I’m working harder than ever,” David says, “and I need to feel comfortable.”
More and more companies are allowing their office workers to wear casual clothes to work in the United States. The change from formal to casual office wear has been gradual. In the early 1990s, many companies allowed their employees to wear casual clothes on Friday(but only on Friday). This became known as “dress-down Friday” or “casual Friday.” “What started out as an extra one-day-a-week benefit for employees has really become an everyday thing,” said business consultant Maisly Jones.
Why have so many companies started allowing their employees to wear casual clothes? One reason is that it’s easier for a company to attract new employees if it has a casual dress code. “A lot of young people don’t want to dress up for work,” says the owner of a software company, “so it’s hard to hire people if you have a conservative dress code.” Another reason is that people seem happier and more productive when they are wearing comfortable clothes. In a study conducted by Levi Strauss and Company, 85 percent of employers said that they believe that casual dress improves employee morale(士气). Only 4 percent of employers said that casual dress has a negative impact on productive. Supporters of casual office wear also argue that a casual dress code helps them save money. “Suits are expensive, if you have to wear one every day,” one person said. “For the same amount of money, you can buy a lot more casual clothes.”
【小题1】David Smith refers to himself as having been “a clothes addict” because      .

Beijing ?（13, July） China sent up a new data relays atellite （数据中继卫星）, Tianlian I -02, on Monday at the Xichang Satellite Launch Centre in South-western Sichuan province．The new satellite will promote the country's satellite communication network for space docking （对接）．
The satellite was launched on a Long-March-SC carrier rocket at 11:41 p．m．, sources at the centre told Xinhua News Agency．The satellite separated from the rocket 26 minutes after its launch and was then successfully delivered into a geostationary transfer orbit （地球同步转移轨道）.
Developed by the China Academy of Space Technology under the China Aerospace Science and Technology Corporation, the satellite is the country's second data relay satellite．The first, Tianlian I -01, was launched on April 25．2008．
The two satellites will form a network to improve communications between China's spacecraft and bases on Earth, according to the centre．They will also be used to help the nation's first space docking, scheduled for the second half of this year．
As planned, China will launch space module Tiangong-I （天宫1号）, which was designed as a platform that will dock with an unmanned spaceship, Shenzhou, for the county's first space-docking mission this year．
Two more Shenzhou spaceships will dock with Tiangong-I next year, and one will be manned by two or three astronauts, according to China Manned Space Engineering Office, which was the main user of the Tianlian I series data relay satellites．
"The new satellite can cover a greater area to track and command the country's space vehicles m low-Earth orbits, such as manned spacecraft and remote sensing satellites, from a higher position m outer space．Only three satellites of this kind are needed to form a global communication network, and China has two now．" Pang Zhihao, a researcher and deputy editor-in-chief of Space International, said．
The satellite could also equip astronauts with real-time communications, which will benefit the county s future manned space flights, he said．
【小题1】What is the main purpose to send up Tianlian I -02 ?

Americans Spend Their Free Time In Various Ways
America is a country of sports—of hunting，fishing and swimming，and of team sports like baseball and football．Millions of Americans watch their favorite sports on television．They also like to play in community orchestras(管弦乐队)，make their own films or recordings，go camping，visit museums，attend lectures，travel，garden，read，and join in hundreds of other activities．The people also enjoy building things for their homes，sewing their own clothes，even making their own photographs．They do these things for fun as well as for economy．
But as much as Americans enjoy their free time，the country is at the same time a“self-improvement” country．More than 25 million adults continue their education，chiefly by going to school in the evening， during their own free time，at their own expense．Added to the time spent on personal activities，Americans a1so devote a great amount of their time to the varied needs of their communities．Many hospitals，schools，libraries，museums，parks，community centers，and organizations that assist the poor depend on the many hours citizens devote to these activities，often without any pay. Why do they do it?
There are several answers．The idea of cooperating and sharing responsibility with one another for the benefit of all is as old as the country itself．
When the country was first founded in 1776，it was necessary for the settlers to work together to live．They had crossed dangerous seas and risked all they had in their struggle for political and religious freedom．There remains among many Americans a distrust of central government．People still prefer to do things themselves within their communities，rather than give the government more control．
Sometimes people offer their time because they wish to accomplish something for which no money is paid，to do something that will be of benefit to the entire community．It is true that some people use their leisure because they are truly interested in the work；or they are learning from the experience．
No matter what the reason is，hundreds of thousands of so-called leisure hours are put into hard，unpaid work on one or another community need．
【小题1】The writer mentions the foundation of the country in order to indicate ____．

Car sharing is another way to drive green that’s gaining in popularity, especially in urban areas．People who may not drive every day but still want a car to run errands （差事）or drive on weekends benefit most from car sharing．Car sharing is usually run by a service like Zipcar, though there are non-profit （非营利的）and informal car sharing services．Members pay a monthly fee and have access to an entire fleet of cars when they need one．The cars are parked in fixed spots around the city, so members only need to make a reservation, and then go to the pickup spot．
Car sharing has major environmental benefits because it reduces the number of cars on the road．Members don’t drive just because they are in a car．They plan trips, and if they don’t need a car, they don’t use one．Still, a car is available to them if they need to make a big trip to the grocery store, pick someone up at the airport or if they want to go to the beach for the day．Members also benefit by having access to a car without any of the headaches of ownership．They usually don’t have to pay for the gas, insurance or maintenance （保养）, and the monthly membership fee is less than a typical car payment．So if you really want to go green but aren’t ready to totally give up a car yet, car sharing may be the way to go．
If you still need to get around, but want to go even greener than sharing a car, share a bus!
【小题1】The author intends to tell us that car sharing ________．

People living in the UK take quite a few holidays abroad and in this country each year．Choices made about where to go, how to get there and what to do while there can either benefit or harm the environment．
While on holiday
Many of the things you can do to he greener on holiday will be the same things you can do at home—but there arc also sonic extra things too, like avoiding gifts made from endangered plants and animals．Here arc some suggestions:
●Making the most of locally produced food and drink, and local activities and attractions will support people in the area you are visiting and reduce the need for further environmental influence from transport;
●Switching off any air conditioning, heating and lights will help reduce climate change effect;
●Save water—some countries suffer from water shortages and saving water can help avoid damage to our natural habitats （栖息地）.
Endangered species （物种）
Some gifts and foods available in some countries can be made from endangered plants or animals．Check before you buy, but if hi doubt, avoid animal and plant gifts．More details of the types of products to avoid and illegal trade hotspots can be found on the Souvenir Alert webpage．
Making a positive contribution to the place you are visiting
There are ways in which your holiday can help support local people and the environment;
●There are many opportunities to volunteer and help with projects that conserve and improve natural habitats;
●When you are away, or if you an- looking for somewhere to visit, you can support projects or attractions which protect wildlife, such as nature reserves and conservation projects．
59．According to the passage, we can______to help reduce climate change effect
A．make good use of water              B．buy local food and drink
C．save electricity                      D．go around on foot
60．We should check the gifts and foods before buying because ______．
A．sometimes they are of poor quality
B．they may not be typical local products
C．some of them will do harm to our health
D．they may be made from endangered animals or plants
61．We can infer from the passage that ____．
A．it is not easy for people to travel abroad
B．not everyone ran tell an illegal souvenir
C．green holidays have been accepted by people
D．volunteer work is a must for protecting natural habitats
62．The passage is mainly about______
A．travel dos and don'ts                      B．the harm done to the environment
C．greener choices for holiday         D．tips on protecting endangered species