One of the most urgent environmental problems in the world today is the shortage of clean water. Having clean drinking water is a basic human right. However, acid rain, industrial pollution and garbage have made many sources of water undrinkable.  
  
Lakes, rivers and even entire seas have become vast pools of poison. Lake Baikal in Russia is one of the largest lakes in the world. It contains a rich variety of animals and plants, including 1,300 rare species that do not exist anywhere else in the world. Yet, they are being destroyed by a large amount of industrial sewage which pour into the lake every day. Even though laws have been made, the governments do not have the power to enforce them. Most  
industries simply ignore the regulations. The Mediterranean Sea occupies 1%of the world's water surface, but it is the dumping ground for $50 \%$ of all marine pollution. Almost sixteen countries regularly throw industrial wastes a few miles offshore.  
Câu 81. What is the main idea of the reading text?  
A. People are throwing poisons into bodies of water.  
B. Clean water is becoming scarce due to pollution and sewage.  
C. Laws have been made to prevent countries from polluting the environment.  
D. Sea water is increasingly polluted by industrial wastes.  
  
Câu 82. According to the reading text, Lake Baikal  
A. is the smallest lake in Russia  
B. has 1,300 rare and endangered animals  
C. is located in the Mediterranean Sea  
D. gets a large amount of industrial sewage every day  
  
Câu 83. What does the word "them" in the passage refer to?  
A. plants  
B. governments  
C. laws  
D. animals  
  
Câu 84. The word "marine" is closest in meaning to 
A. underground  
B. mountainous  
C. inland  
D. aquatic

New York City is located in the southeastern part of New York States just east of New Jersey. The city was founded by the Dutch in 1624. At first it was called Fort Amsterdam, and then New Amsterdam. In 1664, the English took over the city and renamed it New York. With the population of more than 7 million in the city and 19 million in the metropolitan region, New York is the largest city in the United States. It is divided into five parts, which are Manhattan, the Bronx, Brooklyn, Queens, and Staten Island. The total area of these parts is 964 square kilometers. Visitors to New York are all attracted by places such as the Statue of Liberty, the Empire State Building, Times Square, Wall Street, and Broadway theatre district. New York is also the place where tourists can visit some world famous art galleries and museums.  
Câu 85. When was New York City founded?  
A. in the USA  
B. in 1624  
C. in 1664  
D. by the Dutch  
  
Câu 86. When was New York City renamed?  
A. in 1642  
B. in 1624  
C. in 1664  
D. 1646  
  
Câu 87. What is the population of New York? - More than $\qquad$ million.  
A. 5  
B. 7  
C. 19  
D. 26  
  
Câu 88. Which of the followings is NOT a tourist attraction of New York?  
A. Empire State Building  
B. Broadway theatre district  
C. Statue of Liberty  
D. Golden Gate Bridge  
  
Câu 89. Which of the followings is NOT TRUE about New York City?  
A. New York has a lot of tourist attractions. B. New York belonged to the Dutch when it was founded.  
C. The area of New York City is 964 square kilometers.D. The city was named New York by the Dutch.  
  
Câu 90. Which place is famous for art galleries and museums in the world?  
A. Amsterdam  
B. New York  
C. Fort Amsterdam  
D. New Amsterdam

One of the most urgent environmental problems in the world today is the shortage of clean water. Having clean drinking water is a basic human right. However, a