Read the article and select the best answer. Article: Four decades ago a group of college students visited the mountains of Borneo to examine moth populations. Now a team of British scientists, including a member of the original trip, has returned to the same sites to repeat the survey. They have found that, due to rising temperatures, the insects now live 68 meters higher. Global warming is forcing tropical species uphill to escape the rising temperatures at a rate of nearly 2 meters a year, the new study from Borneo suggests. Since this was the only chance to repeat the original survey, the scientist did everything they could to do it exactly the same way, going at the same time of year, in July and August, using photographs to find the exact original sites of the moth traps. "While this is the first study of insects, a few other studies of tropical species are starting to appear," said Thomas. "If you look across all those studies, you'll find the same results, and it's extremely difficult to think of any other explanation for them." While some species might survive by finding places on the mountains with temperatures similar to those of their original habitats, others may run out of habitat on the rocky peaks, warns the study. In a paper in the journal Naturein 2004, Thomas and 13 other experts analyzed the habitats of 1,100 species on five continents, and estimated that on average one quarter were at risk of extinction. Last year a paper published in the Public Library of Science in the US warned that the risk of extinction in the tropics was becoming more and more serious. The authors, Jana and Steven Vamosi, estimated that 20-45% of tropical species were at risk of extinction. Question: Which of the following has been mainly discussed in the passage? Options: A: Climate change forcing moths higher. B: Protecting moths from extinction. C: How to research tropical moths. D: How to study moths living on mountains.
A

Read the article and select the best answer. Article: It's rare that you see the words "shyness" and "leader" in the same sentence. After all, the common viewpoint is that those outgoing and sociable guys make great public speakers and excellent networkers and that those shy people are not. A survey conducted by USA Today referred to 65 percent of executives who believed shyness to be a barrier to leadership. Interestingly, the same article stresses that roughly 40 percent of leaders actually are quite shy--they're just better at adapting themselves to situational demands. Bill Gates, Warren Buffet and Charles Schwab are just a few "innies". Unlike their outgoing counterparts who are more sensitive to rewards and risk-taking, shy people take a cautious approach to chance. Rather than the flashy chit-chat that defines social gathering, shy people listen attentively to what others say and absorb it before they speak. They're not thinking about what to say while the other person is still talking, but rather listening so they can learn what to say. Along the same lines, shy people share a common love of learning. They are intrinsically motivated and therefore seek content regardless of achieving an outside standard. Being shy can also bring other benefits. Remember being in school and hearing the same kids contribute, until shy little Johnny, who almost never said a word, cut in? Then what happened? Everyone turned around to look with great respect at little Johnny actually talking. This is how shy people made good use of their power of presence:they "own" the moment by speaking calmly and purposefully, which translate to a positive image. Shyness is often related to modesty. Not to say that limelight-seekers aren't modest, but shy people tend to have an accurate sense of their abilities and achievements. As a result, they are able to acknowledge mistakes, imperfections, knowledge gaps and limitations. Since shy people have a lower sensitivity to outside rewards than outgoing ones, they're more comfortable working with little information and sticking to their inner... Question: The example of Johnny shows _ . Options: A: shy people are likely to be modest B: hardworking students speak little in public C: some students keep silent on purpose at school D: shy people may have an advantage in discussion
D

Read the article and select the best answer. Article: Dog walkers provide a 20-to-60-minute daily walk for a client's dog,making sure the dog answers the call of nature and gets proper exercise.They often walk more than one dog at a time.Some walkers work for dog-walking services,especially when starting out.Others have their own businesses,and build by word of mouth and advertising.Dog walkers often work part-time,and some provide other services like pet sitting or transporting. In N.Y.City,dog walkers usually earn about $25 an hour.If you work for a dog-walking business,you may earn less-if you are on your own dealing with several dogs at the same time,it may be more. What do you have to do to be a dog walker? First,have a real love of dogs,and have a good knowledge of how to get on with dogs.Try calling dog-walking services to find out about openings.If you're on your own,you'll need to network and market yourself.You might advertise your services in pet offices,grooming businesses,or neighborhood papers.You will need business cards and a mobile phone,and have good references and a clean background.You'll also have to deal with taxes and insurance.You should be physically fit,friendly,neatly dressed and extremely dependable.Many dog walkers are bonded and insured,and this is a definite selling point to clients. Of course,you will be cleaning up dog waste!You will also be outside in all kinds of weather.You may have to deal with dogs that don't like each other,and difficult owners.It's also an up and down kind of business-clients can come and go. For pet lovers,spending the workday with dogs instead of navigating office politics is its own reward!You are your own boss-you can dress casually,your doggy clients will love you unconditionally,and you'll get some great exercise! Question: The passage offers no information about how to as a dog walker. Options: A: find a client B: train a dog C: get prepared D: make more money
B