Cho hình chóp S.ABCD có đáy là hình vuông cạnh ,  Tính thể tích V của khối chóp S.ABCD.  

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 1 to 5:

The warming of the Earth is caused by exhaust gas from automobile engines, fatories and power (1)_________. Carbon dioxide goes up into the atmosphere, and it form a kind of screen that keeps or allows the sunshine in but stop the Earth heart (2) _________getting out. It works like a greenhouse, that’s why we call (3) _________the Green House effect. Because of this effect, the Earth is getting warmer all the time. This (4) _________in temperature will cause big changes to the world’s climate. The sea level will increase as the ice (5) _________the poles will melt.  

Question 3:    

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 1 to 5:

The warming of the Earth is caused  by exhaust gas from automobile engines, fatories and power (1)_________. Carbon dioxide goes up into the atmosphere, and it form a kind of screen that keeps or allows the sunshine in but stop the Earth heart (2) _________getting out. It works like a greenhouse, that’s why we call (3) _________the Green House effect. Because of this effect, the Earth is getting warmer all the time. This (4) _________in temperature will cause big changes to the world’s climate. The sea level will increase as the ice (5) _________the poles will melt.  

Question 2:        

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 1 to 5:

The warming of the Earth is caused by exhaust gas from automobile engines, fatories and power (1)_________. Carbon dioxide goes up into the atmosphere, and it form a kind of screen that keeps or allows the sunshine in but stop the Earth heart (2) _________getting out. It works like a greenhouse, that’s why we call (3) _________the Green House effect. Because of this effect, the Earth is getting warmer all the time. This (4) _________in temperature will cause big changes to the world’s climate. The sea level will increase as the ice (5) _________the poles will melt.  

Question 1:         

Read the following passage and mark the letter A, B, C, or D to indicate the correct word or phrase that best fits each of the numbered blanks from 31 to 35:

                                                         The threat to the Environment

Nowadays people are more aware that wildlife all over the world is in danger. Many species of animals will become (31)_____ if we do not make an effort to protect them. There are many reasons for this. In some cases, animals are (32) _____for their fur or for other valuable parts of their bodies. Some birds, such as parrots, are caught alive and sold as pets. For many animals and birds the problem is that their habitat - the place where they live - is (33) _____ . More land is used for farms, for houses or industry, and there are fewer open spaces than there once were. Farmers use powerful chemicals to help them grow better crops, but these chemicals pollute the environment and (34) _____ wildlife. The most successful animals on earth - human beings - will soon be the only ones (35) _____ , unless we can solve this problem.  

Question 35:

Read the following passage and mark the letter A, B, C, or D to indicate the correct word or phrase that best fits each of the numbered blanks from 31 to 35:

                                                         The threat to the Environment

Nowadays people are more aware that wildlife all over the world is in danger. Many species of animals will become (31)_____ if we do not make an effort to protect them. There are many reasons for this. In some cases, animals are (32) _____for their fur or for other valuable parts of their bodies. Some birds, such as parrots, are caught alive and sold as pets. For many animals and birds the problem is that their habitat - the place where they live - is (33) _____ . More land is used for farms, for houses or industry, and there are fewer open spaces than there once were. Farmers use powerful chemicals to help them grow better crops, but these chemicals pollute the environment and (34) _____ wildlife. The most successful animals on earth - human beings - will soon be the only ones (35) _____ , unless we can solve this problem.  

Question 31:

Read the following passage and mark the letter A, B, C, or D to indicate the correct word or phrase that best fits each of the numbered blanks from 31 to 35:

                                                         The threat to the Environment

Nowadays people are more aware that wildlife all over the world is in danger. Many species of animals will become (31)_____ if we do not make an effort to protect them. There are many reasons for this. In some cases, animals are (32) _____for their fur or for other valuable parts of their bodies. Some birds, such as parrots, are caught alive and sold as pets. For many animals and birds the problem is that their habitat - the place where they live - is (33) _____ . More land is used for farms, for houses or industry, and there are fewer open spaces than there once were. Farmers use powerful chemicals to help them grow better crops, but these chemicals pollute the environment and (34) _____ wildlife. The most successful animals on earth - human beings - will soon be the only ones (35) _____ , unless we can solve this problem.  

Question 32:

Read the following passage and mark the letter A, B, C, or D to indicate the correct word or phrase that best fits each of the numbered blanks from 31 to 35:

                                                         The threat to the Environment

Nowadays people are more aware that wildlife all over the world is in danger. Many species of animals will become (31)_____ if we do not make an effort to protect them. There are many reasons for this. In some cases, animals are (32) _____for their fur or for other valuable parts of their bodies. Some birds, such as parrots, are caught alive and sold as pets. For many animals and birds the problem is that their habitat - the place where they live - is (33) _____ . More land is used for farms, for houses or industry, and there are fewer open spaces than there once were. Farmers use powerful chemicals to help them grow better crops, but these chemicals pollute the environment and (34) _____ wildlife. The most successful animals on earth - human beings - will soon be the only ones (35) _____ , unless we can solve this problem.  

Question 33:

Read the following passage and mark the letter A, B, C, or D to indicate the correct word or phrase that best fits each of the numbered blanks from 31 to 35:

                                                         The threat to the Environment

Nowadays people are more aware that wildlife all over the world is in danger. Many species of animals will become (31)_____ if we do not make an effort to protect them. There are many reasons for this. In some cases, animals are (32) _____for their fur or for other valuable parts of their bodies. Some birds, such as parrots, are caught alive and sold as pets. For many animals and birds the problem is that their habitat - the place where they live - is (33) _____ . More land is used for farms, for houses or industry, and there are fewer open spaces than there once were. Farmers use powerful chemicals to help them grow better crops, but these chemicals pollute the environment and (34) _____ wildlife. The most successful animals on earth - human beings - will soon be the only ones (35) _____ , unless we can solve this problem.  

Question 34:

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks:

Rock carvings suggest that Stone Age people were hunting whales for food as early as 2,200 B.C. Such (31)______ hunting is still practised today in a number of societies including the Inuit people of Greenland and North America. Whaling became big (32)_____________ from the seventeenth century as the demand for whale bone and whale oil rose, and the humpback and sperm whales were hunted in increasing large number. (33)_________ just as stocks of these species began to fall, the explosive harpoon gun was invented. This weapon, together with the development of steam-powered ships, enable the whaler to hunt the fast moving fin and blue whales. In 1905, the whaling (34)____________ moved the water of Antarctica. The introduction of massive factory ships enabled the whales to be processed at sea. As a result, the blue whale had virtually disappeared by the 1950s. In 1946, The International Whaling Commision was established to maintain the declining whale populations. Quotas were set but these were often ignored and the numbers continued to fall. Hunting of many species continued until 1986 when the IWC finally responded to international (35)____________ and a band on commercial whaling was introduced.  

Question 35:

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks:

Rock carvings suggest that Stone Age people were hunting whales for food as early as 2,200 B.C. Such (31)______ hunting is still practised today in a number of societies including the Inuit people of Greenland and North America. Whaling became big (32)_____________ from the seventeenth century as the demand for whale bone and whale oil rose, and the humpback and sperm whales were hunted in increasing large number. (33)_________ just as stocks of these species began to fall, the explosive harpoon gun was invented. This weapon, together with the development of steam-powered ships, enable the whaler to hunt the fast moving fin and blue whales. In 1905, the whaling (34)____________ moved the water of Antarctica. The introduction of massive factory ships enabled the whales to be processed at sea. As a result, the blue whale had virtually disappeared by the 1950s. In 1946, The International Whaling Commision was established to maintain the declining whale populations. Quotas were set but these were often ignored and the numbers continued to fall. Hunting of many species continued until 1986 when the IWC finally responded to international (35)____________ and a band on commercial whaling was introduced.  

Question 32: