A.
B.
C.
D.

t0) 
\n
(4) C2H6 + Cl2 → C2H5Cl + HCl (đk: askt)
\n
(5) C2H5Cl+ NaOH → C2H5OH + NaCl (đk:t0)
\n
(6) 2C2H5OH → C4H6 + 2H2O + H2 (đk:xt




A.
B.
C.
D.

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
The system is designed to be used in __________ with a word processing program.
A.conjunction                        
B.collaboration                       
C.communication       
D.cooperation

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
The little child shrunk in fear as the _______ police officer approached him.
A.fragile                                 
B.embarrassed                        
C.vulnerable               
D.intimidating

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
This is the town in __________ I was born and grew up.
A.which                                 
B.where                                  
C.that                         
D.when

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
A dictionary is_________ important tool in learning a language.
A.the                                      
B.an
C.a
D.x (no article)

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.curriculum   
B.development           
C.technology             
D.entertainment

Mark the letter A, B, C, or D on your answer sheet to indicate the word whose underlined part differs from the other three in pronunciation in each of the following questions.

A.released               
B.rushed                     
C.increased                
D.informed

A.chance
B.father
C.blanket
D.ask

A.some 
B.month
C.mother
D.owner