题目
Questions 19 to 21 are based on the passage you have just heard.19. A) It gives birth to several babies at a time.C) Its breeding grounds are now better preserved.B)It is the least protected mammal species.D) Its population is now showing signs of increase.20.A.) Global warming.C)Commercial hunting.B.)Polluted seawaters.D)Decreasing birthrates.21.A)To mate.C.)To escape hunters.B) To look for food.D.)To seek breeding grounds.
Questions 19 to 21 are based on the passage you have just heard.19. A) It gives birth to several babies at a time.C) Its breeding grounds are now better preserved.B)It is the least protected mammal species.D) Its population is now showing signs of increase.20.
A.) Global warming.C)Commercial hunting.
B.)Polluted seawaters.D)Decreasing birthrates.21.A)To mate.
C.)To escape hunters.B) To look for food.
D.)To seek breeding grounds.
A.) Global warming.C)Commercial hunting.
B.)Polluted seawaters.D)Decreasing birthrates.21.A)To mate.
C.)To escape hunters.B) To look for food.
D.)To seek breeding grounds.
题目解答
答案
Questions 19 to 21 are based on the passage you have just heard.(19)An endangered species of whale is experiencing a small-baby boom off the coast of America. TheNorth Atlantic right whale is one of the rarest species of whale on the planet, numbering only about 411. Butthe Center for Coastal Studies said Friday that its aerial survey team spotted a mum with two babies in Cape CodBay a day earlier. That brings the number seen in nearby waters alone this year to three. That's big newsbecause the whale population has been falling, and no baby whales were seen last year. In all, seven babywhales have been spotted so far this year. (20-1)The whale population has become endangered due tocommercial whaling activities in recent years. This is because they are sometimes hunted for their meat or theirskin. (20-2)Over-hunting could lead to the disappearance of the whale population, possibly causing majorproblems to the global food chain. (21)The whales give birth off the Southeast Coast of America in the winterand travel to feeding grounds off the Northeast Coast in the early spring. The Northeast Coast is a criticallyimportant source of food. The animals often feed close to shore. This provides watchers on land withunbeatable views of one of the rarest of marine mammals. " It's illegal to get within 1,500 feet of the animalswithout a federal research permit, so whale watchers are discouraged from attempting to get close to thewhales.答案详解19. What do we learn from the passage about theC)【精析】细节辨认题。短文中提到,鲸鱼数量濒危North Atlantic right whale?是因为近年来的商业捕杀活动,过度捕猎可能导D)【精析】细节推断题。短文开头说,在美国沿海地致鲸鱼数量的减少。区,一种濒危的鲸鱼正在经历一场小婴儿潮。短21. Why do the whales travel to the Northeast Coast文后面具体说明了这一鲸鱼的种类是北大西洋露of America in the early spring?脊鲸(North Atlantic right whale),这说明北大西B)【精析】目的原因题。短文中说,鲸鱼冬天在美国洋露脊鲸的数量有增长的迹象。东南海岸生育幼崽,然后在早春时到美国东北海20. What has caused the decline of the whale岸觅食。因此,它们早春时到美国东北海岸是为population in recent years?了觅食。
解析
步骤 1：理解问题背景
问题涉及一种濒危的鲸鱼——北大西洋露脊鲸，它在最近几年的数量有增长的迹象。问题要求我们根据短文内容回答三个问题，分别涉及鲸鱼的繁殖情况、数量减少的原因以及它们在早春时到美国东北海岸的目的。
步骤 2：分析问题19
问题19询问关于北大西洋露脊鲸的繁殖情况。短文提到，鲸鱼数量濒危是因为近年来的商业捕杀活动，但最近在美国沿海地区，北大西洋露脊鲸的数量有增长的迹象。因此，正确答案是D) Its population is now showing signs of increase.
步骤 3：分析问题20
问题20询问鲸鱼数量减少的原因。短文提到，鲸鱼数量濒危是因为近年来的商业捕杀活动，这说明鲸鱼数量减少的原因是商业捕猎。因此，正确答案是C) Commercial hunting.
步骤 4：分析问题21
问题21询问鲸鱼在早春时到美国东北海岸的目的。短文提到，鲸鱼冬天在美国东南海岸生育幼崽，然后在早春时到美国东北海岸觅食。因此，它们早春时到美国东北海岸是为了觅食。因此，正确答案是B) To look for food.
问题涉及一种濒危的鲸鱼——北大西洋露脊鲸，它在最近几年的数量有增长的迹象。问题要求我们根据短文内容回答三个问题，分别涉及鲸鱼的繁殖情况、数量减少的原因以及它们在早春时到美国东北海岸的目的。
步骤 2：分析问题19
问题19询问关于北大西洋露脊鲸的繁殖情况。短文提到，鲸鱼数量濒危是因为近年来的商业捕杀活动，但最近在美国沿海地区，北大西洋露脊鲸的数量有增长的迹象。因此，正确答案是D) Its population is now showing signs of increase.
步骤 3：分析问题20
问题20询问鲸鱼数量减少的原因。短文提到，鲸鱼数量濒危是因为近年来的商业捕杀活动，这说明鲸鱼数量减少的原因是商业捕猎。因此，正确答案是C) Commercial hunting.
步骤 4：分析问题21
问题21询问鲸鱼在早春时到美国东北海岸的目的。短文提到，鲸鱼冬天在美国东南海岸生育幼崽，然后在早春时到美国东北海岸觅食。因此，它们早春时到美国东北海岸是为了觅食。因此，正确答案是B) To look for food.