All of the following statements are  true EXCEPT                         .
A.educational development depends completely on economic  well-being
B.a child's intelligence is influenced by that of his/ her  parents
C.to become successful, a child needs both native intelligence and  development
D.studying different twins is a useful scientific  procedure

The expression “at will” in paragraph 3 could best be replaced by _________ .
A.in the future 
B.upside down  
C.as they wanted
D.with great speed

Give the correct form of verbs given
Nothing (do) ...................... since he moved here.
A.has been done
B.did
C.had done
D.will be done

Choose the best answer.
After he ………….. his English course, he went to England to continue his study.
A.has finished            
B.had finished 
C.was finished 
D.would finish

______(52)
A.for
B.to
C.as
D.in order to

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following question.
Water scarcity is fast becoming one of the major limiting factors in world crop production. In many areas, poor agricultural practices have led to increasing desertification and the loss of formerly arable lands: Consequently, those plant species that are well adapted to survival in dry climates are being looked at for an answer in developing more efficient crops to grow on marginally arable lands.
Plants use several mechanisms to ensure their survival in desert environments. Some involve purely mechanical and physical adaptations, such as the shape of the plant's surface, smaller leaf size, and extensive root systems. Some of the adaptations are related to chemical mechanisms. Many plants, such as cacti, have internal gums and mucilage which give them water-retaining properties. Another chemical mechanism is that of the epicuticular wax layer. This wax layer acts as an impervious cover to protect the plant. It prevents excessive loss of internal moisture. It also protects the plant from external aggression, which can come from inorganic agents such as gases, or organic agents which include bacteria and plant pests.
Researchers have proposed that synthetic waxes with similar protective abilities could be prepared based on knowledge of desert plants. If successfully developed, such a compound could be used to greatly increase a plant's ability to maintain health in such adverse situations as inadequate water supply, limited fertilizer availability, attack by pests, and poor storage after harvesting.

Which of the following is a mechanical or physical mechanism that desert plants use?       
A.The small root system   
B.The vast leaf size
C.The high water system       
D.The plant's shape

Each nation has many people who voluntarily take care _________ others.
A.to
B.on
C.of
D.in

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 training course is too expensive; I can not afford it.
A.The training course is such expensive that I can not afford it. 
B.The training course is too expensive for me to attend.
C.It was such an expensive course that I could not afford it.
D.Same for you!

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
She ______ herself on cooking Vietnamese traditional dishes.
A.focuses                   
B.motivates                
C.congratulates          
D.prides

“You're always making terrible mistakes”, said the teacher.
A.The teacher asked his students why they always made terrible mistakes.
B. The teacher realized that his students always made terrible mistakes.
C. The teacher complained about his students making terrible mistakes.
D. The teacher made his students not always make terrible mistakes.