Read the following article and select the best answer. 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: From the passage we can see the Asian carp - is very adaptable to the new environment - has made the Great Lake their home - is becoming a new food in restaurants - becomes even more fierce than before
is very adaptable to the new environment

Read the following article and select the best answer. Article: If you are interested in animals, you probably heard about the tragedy at Seaworld Orlando. On February 24, Tillicum, a six-ton orca ,was performing with his trainer, Dawn Brancheau, who stood on a platform by his pool. They had done the same show together many times before, without incident. This time, though, events took a terrible turn. Without warning, Tillicum leaped from the water, took hold of Branchcheau by her hair, and dragged her deep below the water's surface. Before other trainers could react, Brancheau drowned. Although known as killer whales, orcas are the largest member of the dolphin family. They are easy to train, and performances like Tillicum's have been done safely thousands of times. Yet Dawn Brancheau's death was a shocking reminder of what can happen when human being act together with wild animals. People began to ask, "Should orcas be kept in captivity " Yes Worldwide, only 42 orcas are being kept by humans. Scientists know very little about these huge sea animals, which are difficult to study in the wild. However, they do know that orcas are easily harmed by pollution. As our oceans become ever more damaged by human activity, observing orcas up close helps us understand them and do a better job of protecting them in nature. "I think that some dangerous animals, such as killer whales, should be kept in captivity because it raises awareness about them and educates people about wild animals," says Lauren, 12, a 6-grader from Colorado. "Keeping some in captivity will help protect their species." No Enclosed habitats can be painful to wild animals, and make them act in unpredictable even harmful ways. "It is wrong to keep these animals in captivity", says Prathm, 12. The 7th-grader from New Jersey, adds, "They should live in their own habitats, not be used as entertainment slaves." Richard Ellis, a marine conservationist in New York, agrees. "It is part of human nature to keep wild animals in small spaces and train them to do tricks," he says. "I' m against it because I think it _ the animals." Question: The text is mainly about _ . - how to help animals live a better life - how to develop friendship with animals - whether killer whales should be protected - whether animals should be kept in captivity
whether animals should be kept in captivity

Q: Read the following article and select the best answer. Article: Our "Mommy and Me" time began two years ago. My next-door neighbor and fellow mother, Christie, and I were our in our front yards, watching seven children of age six and under ride their bikes up and down. "I wish I could take one of my children out alone," said Christie. Then we worked out a plan. When Christie takes one of her children out alone, I'll watch her other three. And when she watched two of mine, I will take someone out. The children were extremely quick to accept the idea of "Mommy and Me" time. Christie's daughter, McKenzie, went first. When she returned, the other children showered her with tons of questions. McKenzie was smiling broadly. Christie looked refreshed and happy. "She is like a different kid when there's no one else around," Christie shared with me quietly. With her mother all to herself, McKenzie didn't have to make any effort to gain attention. Just as Christie had noticed changes in McKenzie, I also discovered something different in each of my children during our alone times. For example, I'm always surprised when my daughter, who is seldom close to me, holds my hand frequently. My stuttering son, Tom, doesn't stutter once during our activities since he doesn't have to struggle for a chance to speak. And the other son, Sam, who is always a follower when around other children, shines a leader during our times together. The "Mommy and Me" time allows us to be simply alone and away with each child--talking, sharing and laughing, which has been the biggest gain. Every child deserves an only child at least once in a while. Question: What's one of the changes the author finds in her children? - Tom has less difficulty in speaking. - The daughter acts like a leader. - Sam holds her hand more often. - The boys become better followers
A: Tom has less difficulty in speaking.