2019高中英语Unit7TheSea课时跟踪练(三)Lesson2

课时跟踪练(三) Lesson 2 & Lesson 3—Pre-reading Ⅰ.阅读理解AThere are eight species of dolphins in Hawaii. The bottle­nosed dolphin is the most common type of dolphin. This name came from its longer upper and lower jaws. This dolphin is a very loving and friendly animal. There are cases of dolphins that rescue injured divers in the ocean.In Hawaii, you can experience swimming with dolphins.There are several companies on Oahu and the Big Island thatoffer a swim with these animals in the wild. These kindsof tours usually are combined with water sports such assnorkel (水下呼吸管) or scuba diving.Dolphins are protected by the Marine Mammal Protection Act and it is against the law to become closer than 50 yards (45 m)to them. But these friendly animals can approach to check you out. You have to consider that if dolphins prefer to keep away, you should not try to swim close to them. If dolphins come close while you are swimming in the ocean, don't attempt to touch them and don't make aggressive or sudden movements.At the Sea Life Park on Oahu, they have special dolphin programs that allow you to swim and hug dolphins, besides, you'll learn about these mammals' habits. The Dolphin Quest program will explain to you why dolphins are considered one of the most intelligent creatures.Swimming with dolphins is one of the most attractive activities if you come to Hawaii. But Hawaii's underwater world is amazing and has many other species to watch：Humpback whales，Green sea turtles，Monk seals and so on.While you get in touch with this underworld，always have in mind the main rule of the ocean respect: Look but don't touch.语篇解读：本文向读者介绍在夏威夷和海豚一起游泳时需要注意的几点事项。

1．What's the main idea of Paragraph 1?A．Dolphins in Hawaii have long­bottle noses.B．Dolphins in Hawaii love friends.C．Dolphins in Hawaii always save the divers.D．Dolphins in Hawaii are explained in brief.解析：选D 段落大意题。

第一段简单地介绍了夏威夷海域里海豚的情况。

2．According to the Marine Mammal Protection Act, when you swim in the ocean you ________.A．have to follow the dolphinsB．must stay close to the dolphinsC．should keep a distance from the dolphinsD．can't move with the dolphins解析：选C 细节理解题。

由第三段第一句“Dolphins are protected ... to them.” 可知，人们要与海豚保持一定的距离，否则就触犯了法律。

3．If you want to know something about dolphins' life, you can ________.A．travel to the Big Island now and thenB．obey the Marine Mammal Protection ActC．turn to the dolphin programs at the Sea Life ParkD．live with the dolphins for a long time on Oahu解析：选C 细节理解题。

由第四段可知，从这些节目中可以了解海豚的生活习性。

4．When travelling around Hawaii's underwater world, you can do all of the following EXCEPT ________.A．swim with dolphinsB．have a hug with dolphinsC．watch other animals besides dolphinsD．touch every animal解析：选D 推理判断题。

由文章最后一句可知，在夏威夷海底世界有些动物不能触摸。

BThe world's stocks of seafood will have collapsed (暴跌) by 2050 at present rates of destruction by fishing, a scientist said. By 2048, to be exact, catches of all the presently fished seafoods will have decreased on average by more than 90 percent since 1950. The study says the loss of biodiversity (生物多样性) cuts down the ability of oceans to feed the world's growing human population — expected to rise by 50 percent to nine billion in 2050.Over­fishing also destroys the stability of ocean environments largely, reducing the ocean's ability to produce seafood, resist diseases, filter (过滤) pollutants and rebound (回升) from stresses such as climate change. And every species matters when it comes to the ocean's ability to repair itself, says the study.Dr. Boris Worm, of Dalhousie University, Nova Scotia, the lead author, said,“This is what is projected, not predicted, to happen. I am confident we wil l not go there because we will do something about it. But if this trend continues in this predictable fashion, as it has for the last 50 years, the world's currently fished seafoods will have reached what we define (定义) as collapse by 2048.”“Every year a higher percentage of the currently fished stocks collapse. We are losing it piece by piece.” Prof Callum Roberts, of the University of York, who was not involved in the study, said, “The animals and plants that inhabit the sea are not merely embellishments (装饰) to be wondered at. They are essential to the health of the oceans and well­being of human society. We need to ban destructive fishing practices and create a network of large­scale marine reserves around not just Britain, but globally. ”语篇解读：本文阐释了过度捕捞给整个海洋环境造成危害，并呼吁在全球范围内禁止过度捕捞，建立保护网络。