Choose the options A, B, C or D that is CLOSEST in meaning to the underlined word(s) in each of the following sentences.

School uniform is compulsory in most of Vietnamese schools.

A. depended                   

B. required           

C. divided            

D. paid

Cho các phản ứng sau:

(a) CH₃-CH₃ → x t , t  CH₂=CH₂ + H₂.

(b) CH₄ + Cl₂ → a n h   s a n g  CH₃Cl + HCl.

(c) CH ≡ CH + 2AgNO₃ + 2NH₃ →  AgC ≡ CAg + 2NH₄NO₃.

(d) CaC₂ + 2H₂O →   C₂H₂ + Ca(OH)₂.

(e) 2CH₂=CH₂ + O₂ → x t ,   t 0  2CH₃CHO.

Số phản ứng oxi hóa - khử là

A. 3.

B. 5.

C. 4

D. 2

Lan: “ You have such a nice mobile phone ” Hoa: “ ____________________________”

A. Never mind

B. Really?

C. I am glad you like it. I bought it yesterday

D. Don’t say that again