There are only about 1,000 Hawaiian monk seals(夏威夷僧海豹) left and its population is going do

There are only about 1,000 Hawaiian monk seals(夏威夷僧海豹) left and its population is going down 4% a year. Hawaiian monk seals are found in the northwest part of the Hawaiian Islands. They spend a lot of time at sea. They are able to dive 600 feet deep, and can stay under water for up to 20 minutes. Adults grow up to seven feet long, and weigh between 400 and 600 pounds. They can live as long as 30 years.
These seals are born on land. Every year, usually in May or June, females find sandy beaches and give birth to a single baby. The female seals avoid beaches where the water becomes deep very quickly because this lets sharks swim close to land and catch the seals.
Mothers stay with their babies for six weeks. During that entire time, they do not leave the beach even to eat. Instead, they live off fat that they have stored up over the previous year and feed their babies with fat-rich milk. After six weeks, mothers go back to the sea. The young have to live on their own.
Human disturbance(打扰) has been regarded as the important factor in the decrease of the monk seals. In fact, if human come too near a mother seal too often, she will go out to the sea. Unfortunately, this usually means death for the baby. It is now against the law for people to come within 100 yards of a seal on a beach.
Recent research has shown that the decrease in the Hawaiian monk seal population is due to lack of survival of these seals at one of the most important breeding(繁殖) beaches at French Frigate Shoals. Also, seals often get trapped in fishermen and by changes in weather patterns. If these threats(威胁) were not enough, during the breeding season, males will attack females until they are badly injured or finally killed.
【小题1】What can we learn about Hawaiian monk seals?A．They are in danger of dying out.B．They spend most of the time on the beach.C．They are the largest animals on the Hawaiian Islands.D．They can stay under water as long as they like.【小题2】According to the text, a seal baby .A．is born at seaB．is fed on fat by the motherC．stays with its parents all lifeD．is looked after by its mother for 6 weeks【小题3】It can be inferred from the text that .A．sharks are a threat to Hawaiian monk sealsB．male monk seals fight each other for females in the breeding seasonC．when disturbed by people, the mother seal will protect the baby sealD．Hawaiian monk seals give birth usually in July【小题4】What are the last two paragraphs mainly about?A．Ways to protect Hawaiian monk seals。B．The struggle of Hawaiian monk seals to survive.C．The reasons for the decline(减少) of Hawaiian monk seals.D．The influence of climate change on Hawaiian monk seals.A

(答案→)A 解析：本文主要讲述的是夏威夷僧海豹现在所遇见的灭绝的危险，讲述了这种海豹的生活习性，并分析了即将灭绝的具体的原因。【小题1】A 细节题。根据文章第一句There are only about 1,000 Hawaiian monk seals(夏威夷僧海豹) left and its population is going down 4% a year.可知现在这种动物数量稀少，而且还在不断减少。处于灭绝的危险之中，故A正确。【小题2】D 细节题。根据文章第三段Mothers stay with their babies for six weeks. During that entire time, they do not leave the beach even to eat. Instead, they live off fat that they have stored up over the previous year and feed their babies with fat-rich milk. After six weeks, mothers go back to the sea. The young have to live on their own.可知母海豹照顾孩子6个星期。故D正确。【小题3】.A 推断题。根据文章第二段最后一句The female seals avoid beaches where the water becomes deep very quickly because this lets sharks swim close to land and catch the seals.可知鲨鱼对海豹来说也是一个巨大的威胁。故A正确。【小题4】C 段落大意题。根据文章最后2段Human disturbance(打扰) has been regarded as the important factor in the decrease of the monk seals.和Recent research has shown that the decrease in the Hawaiian monk seal population is due to lack of survival of these seals at one of the most important breeding(繁殖) beaches at French Frigate Shoals. 可知这两段都是分析出现这种情况的原因。故C正确。

就是这个解释