Ion nào sau đây có 32 electron ?

A. SO 4 2 -     B.  CO 3 2 -

C.  NH 4 +     D.  NO 3 -

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word for each of the blanks.

        These days, most people in Britain and the US do not (22) ______ very formal clothes. But sometimes it is important to wear the right thing.

        Many British people don't think (23) ______ clothes very much. They just like to be comfortable. When they go out to enjoy themselves, they can wear almost anything. At theatres, cinemas and concerts you can put on (24) ______ you like from elegant suits and dresses to jeans and sweaters. Anything goes, as long as you (25) _____ clean and tidy.

         But in Britain, as well as in the US, men in offices usually wear suits and ties, and women wear dresses or skirts (not trousers). Doctors, lawyers and business people wear quite formal clothes. And in (26) ______ hotels and restaurants men have to wear ties and women wear smart dresses.

Điền vào số (22)

A. sell

B. buy

C. wear

D. know

Cho dãy các chất: m - CH 3 COOC 6 H 4 CH 3 , m - HCOOC 6 H 4 OH , ClH 3 NCH 2 COONH 4 , p - C 6 H 4 ( OH ) 2 , p - HOC 6 H 4 CH 2 OH , H 2 NCH 2 COOCH 3 , CH 3 NH 3 NO 3 . Số chất trong dãy mà 1 mol chất đó phản ứng tối đa được với 2 mol NaOH là

A. 2

B. 3

C. 5

D. 4

Mark the letter A,B,C or D on your answer sheet to indicate the correct answer to each of the following questions

She took a course in fine arts ………………starting her own business in interior design 

A. with a view to 

B. in terms of 

C. in order to 

D. with preference to

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. vacant              

B. factor               

C. college             

D. device

Cho chất X có công thức phân tử C₄H₈O₂ tác dụng với dung dịch NaOH sinh ra chất Y có công thức phân tử C₂H₃O₂Na. Công thức của X là

A. C₂H₅COOCH₃

B. CH₃COOC₂H₅

C. HCOOC₃H₅

D. HCOOC₃H₇