I'm taking a test and have to guess the right answer to the question after the article. Article: Chicago is considering firm measures to prevent the Asian carp,a giant fish native to the Far East,from coming into North America's Great Lakes in large numbers.Such a move could cost up to$18bn,a heavy economic burden to the city. This species,more than a metre in length,was originally introduced to southern US states three decades ago to control weeds in sewage treatment plants.But they escaped into the Mississippi River and increased in number quickly,making their way north towards the Great Lakes and threatening the native fish species along the way. "Dozens of them will often leap out of the water as boats approach.''Michael Beecham,a local environmental expert,described how frightening the scene was."I've gone down the river and seen these fish jump up and hit me in the face.It is a big problem for our native species," he said. A meeting has been organized to find a technological solution to the carp problem,one of which involves blocking parts of Chicago's canal system.Listening at the meeting was John Goss,who was worried about the effect that having barriers in the canal system would have on industry."It would certainly increase the cost of transportation,"he told."It is currently very cheap and efficient to bring materials and finished goods down the Chicago ship canal.'' Another cheaper option is to eat the fish out of existence.Dirk Fucik is selling carp burger at his fish shop not far from downtown Chicago.He thinks the carps are a great resource."To catch it and throw it away is a waste,"he says."Eating them helps solve the problem and also provides jobs."But the idea has not yet caught on.So far,he is the only person in Chicago selling carp burgers. Question: What's the best title of the passage? Options: A: The Great Lakes,new home for Asian Carps B: The Asian carp escapes from the Great Lakes C: Possible ways to handle non-native species D: Chicago goes to war with Asian carps
D
(Question)
I'm taking a test and have to guess the right answer to the question after the article. Article: How can you find out what is going on inside a person's body without opening the patient's body up? Regular X rays can show a lot. CAT scans can show even more. They can give a complete view of body organs. What is a CAT scan? CAT stands for a kind of machine. It is a special X-ray machine that gets a 360-degree picture of a small area of a patient's body. Doctors use X rays to study and determine diseases and injuries within the body, X rays can find a foreign object inside the body or take pictures of some inside organs to be X-rayed. A CAT scanner, however, uses a group of X rays to give a cross-sectional view of a specific part of the body. A fine group of X rays is scanned across the body and around the patient from many different directions. A computer studies the information from each direction and produces a clear cross-sectional picture on a screen. This picture is then photographed for later use. Several cross sections, taken one after another, can give clear "photos" of the entire body or of any body organs. The latest CAT scanners can even give clear pictures of active, moving organs, just as a fast-action camera can "stop the action", giving clear pictures of what appears unclear to the eye. And because of the 360-degree pictures, CAT scans show clear and complete views of organs in a manner that was once only shown during operation or examination of a dead patient. Frequent appearance before X rays can cause skin burns, cancer or other damage to the body. Yet CAT scans actually don't cause the patient to more radiation than regular X rays do. CAT scans can also be done without getting something harmful into the patient, so they are less risky than regular X rays. CAT scans provide exact, detailed information. They can quickly find such a thing as bleeding inside the brain. They are helping to save lives. Question: We can infer from this passage that_. Options: A: patients in front of CAT may suffer from a bit of radiation B: doctors need no opening-up of the body with CAT scanners C: CAT scanners are more expensive than regular X-ray machines D: CAT scanners can take photos of either the whole body or a part of it
(Answer)
A
Ques:I'm taking a test and have to guess the right answer to the question after the article. Article: I was asked in an email about learning idioms in a foreign language. Maybe I am different from most people,but I do not bother with them. To me they are kind of dessert of language learning. They come at the end of a meal. Once you have filled up with the key words and phrases that are used in a variety of situations,then you can add a few idioms. And by that time, you will be able to pick them up naturally anyway. I find that many learners have trouble with idioms,as if repeating some very colloquial expressions is going to upgrade how they sound in a language. In fact, it is the opposite. Idioms are difficult to use correctly. Yes,occasionally you hear idioms and do not understand. But,in my experience,there are always situations where you do not understand. It is best to focus on the most important words,what they mean and how they are used. Certainly,it is best for a nonnative speaker to stick to standard speech. Some teachers even try to teach the "real language".Then you hear nonnative speakers saying things like "I goanna", "You wane" etc. You will learn all the idioms you need just by exposing yourself to the language. In general,you can save any phrase that you find interesting,and if that includes idioms,go to it. But I would not make any special effort to go after idioms. I,in fact,avoid them. If I come across something in Russian that strikes me as a particularly idiomatic use of words,I just leave it aside; do not even bother trying to learn it. If it keeps on appearing,then I will learn it. Question: In the writer's opinion,when one learns a new language,one should learn its idioms _ . Options: A: at the beginning B: on one's own C: in the end D: without help

Ans:
C