Read the article and select the best answer. Article: For years scientists have been worried about the effects of air pollution on the earth's natural conditions. Some believe the air inside many houses may be more dangerous than the air outside. It may be one hundred times worse. Indoor air pollution can cause a person to feel tired, to suffer eye pain, headache and other problems. Some pollutants can cause breathing disorders, diseases of blood and even cancer. Most scientists agree that every modern house has some kind of indoor pollution. People have paid more attention to the problem now. It is true that when builders began making houses and offices they did not waste energy. To do this they build buildings that limited the flow of air between inside and outside. They also began using man-made building materials. These materials are now known to let out harmful gases. As the problem became more serious, scientists began searching for a way to deal with it. They discovered a natural pollution control system for building--green plants. Scientists do not really know how plants control air pollution. They believe that a plant's leaves absorb or take in the pollutants. In exchange the plant lets out oxygen through its leaves and tiny organizations on its roots. Scientists suggest that all buildings should have one large plant or several small plants inside for every nine square meters of space. Studies of different plants show that each absorbs different chemicals. So the most effective way to clean the air is to use different kinds of plants. Having green plants inside your house can make it a prettier and healthier place. Question: The indoor air pollution is caused by _ . Options: A: the limit of the flow of air between inside and outside B: the building way that the builders want to save energy C: the building things that are made of man-made materials D: the man-made building materials and the limit of air-flow
D

Read the article and select the best answer. Article: A good reader becomes sooner or later a good book buyer.The sooner,the better. The reading done in a book drawn from a library can not be so pleasant at the moment nor so permanently useful as the reading done in our own copy. A book which is worth reading is likely to be read more than once,and at each reading some idea or some statement makes such an impression that we wish to refer to it again. Some readers underline the page as they read,but I find that a page which I have underlined can not give me so many fresh impressions as one which has no marks on it.My habit is to make my own index of a book as I read.I put down the number of the page and a word or two to identify the thought or the fact which I get from it.On a second or third reading I am likely to double or triple the size of this index.This is my substitute for underlining.Most of the books in my library are so indexed that I can find quickly the passage which from time to time I wish to look up. To use a book in this way,organizing it for continued usefulness year after year, we must,of course,do our reading in a copy which belongs to us.The books I buy are chiefly those of less expensive editions. As I have grown older and the number of books on my shelves has increased,I appre- ciate editions which do not take much room.By careful and continuous selection I keep my librarv down to ten thousand books.This would be,of course,too large a number for any but a professional scholar or writer.But my advice to a book lover is to weed but his library at least once every two years,giving away the books which are not likely to be read again. And never never buy a book which you will not immediately read.A library bought only for looks is not literature,but indoor decoration. Question: What is the disadvantage of underlining according to the author? Options: A: Underlined books look old and not worth reading. B: The lines make it difficult for the reader to concentrate. C: Underlined books cannot give the reader enough fresh impressions. D: The reader cannot find the passage he or she wishes to read again.
C

Q: Read the article and select the best answer. Article: Money off your rented textbooks from TextbookRental. ca Offer details *Pay online *Limit l voucher per person,may buy 5 more for others *Shipping is extra(average$6,return shipping included) *The voucher is valid towards shipping *Taxes extra High spots *Save up to 75%on every textbook *Rent books by the semester *past shipping *Buyback program for your old books *Make a great gift Keeping school expenses low i s important. Get a better bargain on academic supplies with today's WagJag:for$10,receive$25 towards rental textbooks from TextbookRental ca. TextbookRental. cahelps students continue with their study while saving precious money for other purposes. The site contains books in all academic fields--arts,sciences,business,education and more. Once you find your desired textbooks,complete the easy checkout process and your course materials will be shipped to your dorm or home. Discounts on each single book vary but can save you up to 75%. After the semester finishes,mail back your books(free of marking,stains or other damage),using the included prepaid return envelope. The site's l5-day return policy 1ets you send unneeded books back for a refund. Centered in Toronto,TextbookRentaL ca has delivery places across the country to make sure students from Victoria to St. John's get their textbooks in a timely fashion. The site also lets students save a little money by buying their previously purchased used textbooks. If you're not happy with your purchase,let us know why and we'll give you a full refund. Seriously, it's that simple! TextbookRental. ca Contact WagJag--WagJag Business Hours are Monday--Friday 9:00 am to 7:00 pm. E-mail:info@wagiag. com Phone:416-687-5848 Toll free :1-855-492-4524 Fax:1-866-268-4286 Question: What is the main advantage of the service from TextbookRental. ca? Options: A: It helps students limit school expenses. B: It sells new textbooks at a 10w price. C: It sends interesting gifts to students. D: It helps students who are poor at studies.
A: A

Q: Read the article and select the best answer. Article: There is a large percentage of Asian people in the US. They're hard working, respectful but strange sometimes. If you don't understand the culture, you will get some problems with them. Asian people are different from any other cultures if you think you know them, you might want to think again. How are they different? When it comes to most Asian culture, respect is everything. You can do anything you want but don't disrespect an Asian man. You will get some real consequences afterward and especially if he is your boss. It's something called " _ " in the Asian culture. It's ridiculous sometimes but it's their culture. Sometimes their culture can come in between their relationship at work. Asian people might expect a lot of respect from their co-workers when their co-workers just see them as an equal. Americans are very different from Asian people. If you're Asian, you might want to understand the American culture and even adapt to their culture if you work with them. It will be easier for you since you're in their countries. Imagine an American working in China, expecting Chinese co-workers to get along with him when he criticizes them straight out on every single matter in front of everyone. I think they will take him outside and take care of him. It just doesn't work that way with Asian people. If you're an American boss giving your Asian employee a review, you will see that they will have a problem with your negative remarks. They will think that you don't like them, disrespectful, and want to get rid of them; when in fact, you're just doing your job. Of course, it's not fair for you as an American boss but just expect that it can be something that is on your Asian employee's mind. Question: The negative remarks an American boss gives on your work probably mean he/she _ . Options: A: doesn't like you any longer B: thinks you are not worth respecting C: offer you some better advice D: wants you to improve your work
A: D