-American office workers spend an average of 52 hours a week at their desks, according to a statistic survey. Some might argue that not all that time is spent working,but still all those hours in windowless offices with artificial light can have an influence. A few green additions could have a large effect on worker happiness,according to the survey led by Tina Cade from Texas State University. "We pretty much found out that if you had windows and plants or even if you just had plants in your office, you were more satisfied with your job," Cade told LiveScience. "We thought it was important for offices because a lot of times people are looking for ways to keep employees happy and do all these expensive things like building a gym. Maybe for less investment they could put in a few plants in important places." The team surveyed 450 office workers in Texas and the Midwest,asking questions about job satisfaction and the work environments. When asked about their overall life quality,82 said they felt "content" or "very happy". Only 69 percent of those who work with plants but without windows,and 60 percent of those who have windows but no plants, said they felt this way. The group of people who work without plants or windows were  the most dissatisfied,with only 58 percent of them saying that overall they were "content" or "very happy". While no one who works with plants,windows,or both reported they felt "miserable", 0.8 percent of those who work in offices without either said they were "miserable". "I was really surprised that having a plant in your office appeared to be more beneficial than having a window in your office," Cade said. "Everybody says, 'I need a window!' but actually it seemed like a plant could be a suitable alternative." According to the survey,the group of people who work without plants or windows   _  . A) didn't feel content at all B) all suffered from work pressure C) were the most dissatisfied D) worked with low efficiency
C

Don't be surprised when strangers talk to you in Canada! You will find that many Canadians will smile at you as they pass in the street, or say something to you like "Hi!" or "How's it going?" Just reply with something similar. In the UK the reply would be "I'm fine", but in Canada they say "I'm good". In company, when someone is offering you a second helping of food or more wine, if you don't want any more, use the same expression-- "I'm good". In this case, it means "No, thank you. I've had enough". Most Canadians don't press you to eat more than you want. In restaurant, your plate will be cleared away almost immediately you have finished eating. When you go into a shop or store, the shop assistant asks you how you are or if they can help you, it is their way of being friendly and making conversation with the customers. Canadians eat early and go home early. When you are invited to a Canadian's home, you may be asked to arrive at 5:30 pm or 6 pm. But guests in Europe don't expect to arrive until 7:30 pm or 8 pm. Remember to take off your shoes and leave them inside the door without being asked. It's not a religious custom, but it's practical. In winter, there can be a lot of snow and dirt on your shoes, once you are in the warm house it melts and falls off, making a mess. Canadians tend to have light colored carpets or hardwood floors. If you're invited for dinner, it will be a full sit- down meal. Meat is usually barbecued in the freezing cold of winter. Do take something with you, like a bottle of wine. Arrive on time and don't stay over 10 pm. What would be the best title for this passage? A) Some customs in Canada B) Dinner party rules in Canada C) Studying in Canada D) Doing business in Canada
A

Kate Anderson became an accidental car thief when she went to pick up her daughter's car near an Ohio University building last week.Anderson saw the nickelgray Toyota Camry and used her daughter's key to unlock the car,start the engine and drive home. When Charlie Vansant left class a short time later,he found only an empty parking spot.He first assumed the car had been towed,but when the police couldn't find a record of it,they took a theft report. The morning after Anderson took back the car,her daughter discovered the Camry in the driveway wasn't hers.She found Vansant's name on paperwork in the glove compartment and looked up his phone number on the Website for the university. When she told Vansant the car was in her driveway,"It sounded real fishy at first,like maybe she wanted to hold the thing for ransom,"Vansant said! He eventually went to the house with a police officer,where he was reunited with his car.According to a police report,the case was closed "because of the mistaken car identity."Anderson wasn't charged. Vansant seemed to blame the car company more than the "thief"."Her key fit not only my lock,but my ignition as well--so highfive for Toyota,I guess,"he said. Toyota spokesman Bill Kwong said  key technology wasn't as sophisticated as two decades ago,and there were so many ways to cut a key,making it possible for such a mixup to occur.He said the company now has a microchip embedded in the keys for 90 percent of its vehicles that allows them to start only with the correct key. According to the passage,it can be learned that  _ A) the daughter is more honest than her mother B) many thefts occurred because the same keys were used C) Toyota Camry is a kind of car,which is easier to unlock D) the car producers should pay more attention to car identity
D

The computer is fast, and never makes a mistake, while people are too slow, and full of mistakes sometimes. That's what people often say when they talk about computers. For over a quarter of a century, scientists have been making better and better computers. Now a computer can do a lot of everyday jobs wonderfully. It is widely used in factories, hospitals, post offices and airports. A computer can report, decide and control in almost every field. Many computer scientists are now thinking of making the computer "think" like a man. With the help of a person, a computer can draw pictures, write music, talk with people, play chess, recognize voices, translate languages and so on. Perhaps computers will one day really think and feel. Do you think the people will be afraid when they find that the computer is too clever to listen to and serve the people? The passage is written to   _   . A) warn people of the danger of the computer B) tell people about the computer C) tell people about computer scientists D) show how to use the computer

B