题目内容
Sharks (鲨鱼) are the most frightening animals in the sea. Sometimes we can see sharks swimming in the sea around Hong Kong. People put nets around some beaches to protect swimmers. When there is a "shark's flag", people must slay on the beach. It will be too late if a shark can swim sixty kilometers an hour to you.
There are 30 kinds of sharks and 25 kinds of them are dangerous. The whale sharks are very big. They can grow to 18 meters long, but they are not dangerous to people. The jaws (大白鲨) and the tiger sharks are the most dangerous kinds of sharks.
Do you know all sharks must keep swimming, or they will go down? All sharks can feel everything that happens around them. We must keep calm and don't make any noise when a shark is swimming near you.
If a shark loses a tooth, a new one will grow out very quickly. So sharks always have many sharp teeth.
1. Why do people put nets around some beaches?
A. To keep swimmers running.
B. To keep swimmers swimming.
C. To keep swimmers safe.
D. To keep sharks swimming.
2. _________ of sharks are dangerous in all kinds of sharks.
A. Less than 80% B. More than 80%
C. More than 90% D. Less than 20%
3.What are the most dangerous kinds of sharks?
A. The jaws and the tiger sharks.
B. The whale sharks and the tiger sharks.
C. The jaws and the whale sharks.
D. The whale sharks and the blue sharks.
4. What does the underlined word mean in Chinese?
A. 安静 B. 吵闹 C. 沉默 D. 任性
5.Which is NOT true according to the passage?
A. It will be late if a shark can swim sixty kilometers an hour to you.
B. There are 30 kinds of sharks in the sea.
C. All sharks must keep swimming to go down in the sea.
D. Sharks's teeth can grow out very quickly.
1.C
2.B
3.A
4.A
5.C
【解析】试题分析：这是一篇介绍鲨鱼生活习性及特点的科普文。文章说到了鲨鱼的种类，危害性，生活习性等特点。
1.小题1】细节理解题。People put nets around some beaches to protect swimmers.句意：人们在部分海滩围上网去保护游泳的人。由此句可知答案选C，围网的目的是保护游泳者的安全。
2.小题2】推理判断题。There are 30 kinds of sharks and 25 kinds of them are dangerous.句意：有30种鲨鱼，25种是危险的。由这个数据可以推算出危险鲨鱼占鲨鱼总数的比例超过80%，因此答案选C
3.小题3】细节理解题。The jaws (大白鲨) and the tiger sharks are the most dangerous kinds of sharks.句意：大白鲨和虎鲨是鲨鱼中最危险的种类。由这句可知答案选A
4.小题4】词意猜测题。We must keep calm and don't make any noise when a shark is swimming near you.
句意：当鲨鱼游近你的时候，我们必须保持镇静，并且不能发出任何响声。由后半句可知，鲨鱼对周围声音很敏感，不能发出任何响声才不会被它发现，由此推断划线单词应该是与安静有关的意思。分析四个选项，BD首先排除，而沉默多指不说话，不发言，而不是不发出任何声音的意思，因此排除C项，选A
5.小题5】细节理解题。It will be too late if a shark can swim sixty kilometers an hour to you.句意：如果鲨鱼向你以每小时60公里的速度游来时，你逃生将是太晚了。故A项正确，排除。There are 30 kinds of sharks ……句意：有30种鲨鱼……由此句可知B项正确，排除。Do you know all sharks must keep swimming, or they will go down?句意：你知道所有的鲨鱼必须一直游泳，否则他们会沉下去吗？由此句可知C项错误。If a shark loses a tooth, a new one will grow out very quickly.句意：如果鲨鱼掉了一颗牙，一颗新牙将会很快长出来。由此句可知D项正确。因此答案选C
考点：科普类说明文
