Why does the passage begin with a description of the properties of calcium nitrate?
 
A.to give background information so the reader can understand the topic better 
B.Because calcium nitrate is the main idea.
C.to show how elements combine to create calcium nitrate
D.to prove the existence of calcium nitrate

Exercise 3. Choose one word or phrase that best fits the blank space in each sentence.
One day Elizabeth Blackwell decided that she wanted ____________ a doctor.
A.to become   
B.become 
C.became   
D.becoming

Mike’s exam results are ______ than Nick’s.
A.important                
B.good                                   
C.well                        
D.better

Mark the letter A, B, C, or D on your answer sheet to indicate the word that differs from the other three in the position of primary stress in each of the following questions.

A.response                 
B.relate                       
C.follow                     
D.reserve

Write the letter A, B, C or D on the top of the first page to indicate the sentence that is closest in meaning to each of the following questions.
Even though some events were cancelled, thousands of people attended the festival.
A.As some events were cancelled, thousands of people attended the festival.
B.No matter how many people attended the festival, some events were cancelled.
C.In spite some cancelled events, thousands of people attended the festival.
D.Despite the cancellation of some events, thousands of people attended the festival.

A.supper
B.hungry
C.pull
D.sun

Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that best combines each pair of sentences in the following questions.
The dogs watch the chicken coop. The dogs protect the chickens from wolves.
A.Protecting the chickens from wolves, the dogs watch the chicken coop from them.
B.They protect the chickens from wolves as the dogs watch the chicken coop.
C.The dogs watch the chicken coop to protect the chickens from wolves.
D.Watching the chicken coop because the dogs protect chickens from wolves.

Mark the letter A, B, C or D to indicate the correct answer to each of the following sentences.
To many children, playing computer games is a form of _____.
A.relax                       
B.relaxingly                
C.relaxation                
D.relaxed

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
Scientist are warning that human activity is starting to cause ____ in the Earth’s climate due to increasing temperatures.
A.conservation           
B.changes                   
C.habitats                   
D.deforestations

Mai /bad / at/ Math/ than / Lan Anh.
A.Mai is bad at Math than Lan Anh.
B.Mai is worse at Math than Lan Anh.
C.Mai is more worse at Math than Lan Anh.
D.Mai is the most worse at Math than Lan Anh.