Choose the word that has the underlined part pronounced differently from the rest:
while               which               who              white
A. while               
B. which               
C. who              
D. white

Choose the word that has the underlined part pronounced differently from the rest:  
tour           course              court              pour
A. tour           
B. course              
C. court              
D. pour

Choose the word that has the underlined part pronounced differently from the rest:
unhappy              construction                future                hurrying
A. unhappy              
B. construction                
C. future                
D. hurrying

Choose the word that has the underlined part pronounced differently from the rest:
three              south               southern                    both
 
A. three              
B. south                
C. southern                    
D. both

Choose the word that has the underlined part pronounced differently from the rest:
honest                 holiday                 home                   happiness
A. honest                 
B. holiday                 
C. home                   
D. happiness

Choose the word that has the underlined part pronounced differently from the rest:
blame              applicant                   roommate                   amaze
A. blame              
B. applicant                   
C. roommate                   
D. amaze

Choose the word that has the underlined part pronounced differently from the rest:  
 developed                    discovered                       worked                     expressed
A. developed                   
B.  discovered                       
C. worked                     
D. expressed

Tìm nguyên hàm
$\int{{\frac{3}{{1-3x}}dx.}}$
A. $\ln \left| {1-3x} \right|+C.$
B. $\frac{1}{{-3}}\ln \left| {1-3x} \right|+C.$
C. $-3\ln \left| {1-3x} \right|+C.$
D. $-\ln \left| {1-3x} \right|+C.$

Nguyên hàm $\int{x{{e}^{x-1}}dx}$ bằng
A. $x{{e}^{x-1}}+x+C.$
B. $x{{e}^{x-1}}-{{e}^{x-1}}+C.$
C. $x{{e}^{x-1}}-x+C.$
D. $x{{e}^{x-1}}+{{e}^{x-1}}+C.$

Nguyên hàm $\int{x\cos x}dx$ bằng
A. $-x\sin x-\cos x+C.$
B. $x\sin x-\cos x+C.$
C. $-x\sin x+\cos x+C.$
D. $x\sin x+\cos x+C.$