【文章內容簡介】 ______ for help. A. her mother B. her teacher C. Bob’s teacher D. Bob’s mum (2) Dolphins are not fish, but warmblooded animals. They live in groups, and speak to each other in their own language. In this they are like other animals, such as bees and birds. But dolphins are very different from almost all land animals. Their brain is nearly the same size as our own, and they live a long time at least twenty or thirty years. Like some other animals, dolphins use sound to help them find their way around. They also make these sounds to talk to each other and to help them find food. We now know they do not use their ears to receive these sounds, but the lower part of the mouth, called the jaw. Strangely, dolphins seem to like man, and for thousands of years there have been stories about the dolphin and its friendship with people. There is a story about sailors in the 19th century. In a dangerous part of the sea off the coast of New Zealand, they learnt to look for a dolphin called Jack. From 1871 to 1903 Jack met every boat in the area and showed it the way. Then in 1903 a passenger on a boat called The Penguin shot and wounded (傷害 ) Jack. He recovered and for nine years more continued to guide all ships through the area except for The Penguin. Today, some people continue to kill dolphins, but many countries of the world now protect them and in these places it is against the law to kill them. 54. Dolphins are different from many other animals in that they _________. A. live in groups B. have large brains C. are warmblooded D. have their own language 55. Which of the following does the dolphin use to help it find its way around? A. Its nose. B. Its ears. C. Its mouth. D. Its eyes. 56. Why did the sailors off the coast of New Zealand look for Jack? A. He was lonely and liked to be with people. B. They enjoyed playing with him. C. He was seriously wounded. D. They wanted his help. 57. By telling the story of Jack the writer wanted to show that _________. A. dolphins are friendly and clever B. People are cruel to animals C. Jack is different from other dolphins D. dolphins should be protected by law (3) A study suggests that the United States needs to work on training and keeping scientists. Since 1980, the number of jobs that need science and engineering (Samp。E) knowledge has increased (增加 ). And each year in the US, the number of jobs that need Samp。E skills increases by 5%. In the next 20 years, many talented people with Samp。E knowledge will retire (退休 ), because more than half of them now are in their 40s or older and 30% of them are 55 or older. Therefore, to have enough talented people, universities need to train students in Samp。E. Yet fewer and fewer students are choosing jobs in Samp。E. In other words, there are not enough new talented people to take the place of the retiring ones, so there will be a gap (缺口 ) in the future. In the past, the US filled this gap with foreign talented people. These people came to the US to study and got their doctorates (博士學位 ) from American universities. Many of them lived in the US to use their science skills . In 2021, foreign talented people not more than half of the doctorates in Samp。E in this country. But the US can’t only depend on foreign talented people. In order to have more Americans with doctorates that work in jobs in Samp。E, more students need to go to university. However, even though the US is starting to support science, and middle school students are deciding to bee scientists, these students will not finish their studies until 2018 or 2020. 58. The number of jobs that need Samp。E skills increases by _________ each year in the US. A. 30% B. 5% C. 40% D. 20% 59. According to the passage, which of the following is NOT right? A. In the US many old talented people with Samp。E knowledge will not retire because they are needed. B. Universities are training students in Samp。E to have enough talented people. C. A lot of foreign talented people lived in the US to use their science skills. D. Fewer and fewer students are choosing jobs in Samp。E. 60. In the passage the writer thinks that________. A. all the students should study science at university in the US B. foreign talented students get less than half of the doctorates in the US C. the US needs to do something to keep talented people in Samp。E D. there are too many people in America that need jobs 61. What main point does the writer mainly make in the last paragraph? A. Foreign talente