英语四级阅读理解是英语四级考试中的重点部分，而随着时代的发展，英语四级中的阅读题型也在不断更替改变，下面是新东方网考研频道英语四级频道为大家整理的英语四级阅读寒假练习题，希望可以为大家带来帮助。 

Questions 21 to 25 are based on the following passage:

Every year 100 million holiday—makers are drawn to the Mediterranean. With one third of the world's tourist trade, it is the most popular of all the holiday destinations; it is also the most polluted.It has only 1 per cent of the world's sea surface, but carries more than half the oil and tar floating on the waters. Thousands of factories pour their poison into the Mediterranean, and almost every city, town andvillage on the coast sends its sewage, untreated, into the sea.

The result is that the Mediterranean, which nurtured so many civilizations, is gravely ill—the first of the seas to fall victim to the abilities and attitudes that evolved around it. And the pollution does not merely keep back life of the sea—it threatens the people who inhabit and visit its shores.

The mournful form of disease is caused by sewage. Eighty five per cent of the waste from the Mediterranean's 120 coastal cities is pushed out into the waters where their people and visitors bathe and fish. What is more, most cities just drop it in straight off the beach; rare indeed are the placeslike Cannes and Tel Aviv which pipe it even half a mile offshore.

Not surprisingly, vast areas of the shallows are awash with bacteria and it doesn't take long for these to reach people. Professor William Brumfitt ofthe Royal Free Hospital once calculated that anyone who goes for a swim in the Mediterranean has a one in seven chance of getting some sort of disease. Other scientists say this is an overestimate; but almost all of them agree that bathers are at risk.Industry adds its own poisons. Factories cluster round the coastline, andeven the most modern rarely has proper waste treatment plant. They do as much damage to the sea as sewage. But the good news is that the countries of the Mediterraneanhave been coming together to work out how to save their common sea.

21. The causes of the Mediterranean's pollution is ____.

A) the oil and tar floating on the water

B) many factories put their poison into the sea

C) untreated sewage from the factories and coastal cities

D) there are some sorts of diseases in the sea

22. Which of following consequence of a polluted sea is not true according to the passage?

A) Bring up so many civilizations.

B) Various diseases in the sea.

C) It threatens the inhabitants and travelers.

D) One in seven chance of getting some sort of disease swimming in the sea.

23. The word “sewage”refer to ____.

A) poison B) waste C) liquid material D) solid material

24. Why does industry do much damage to the sea?

A) Because most factories have proper waste treatment plants.

B) Because many factories have not proper waste treatment plants even the most modern one.

C) Because just the modern factory has a waste treatment plant.

D) Because neither ordinary factories nor most modern ones have p roper waste treatment plants.

25. What is the passage mainly about?

A) Save the world.

B) How the people live in the Mediterranean sea.

C) How the industry dangers the sea.

D) Beware the dirty sea.