Phần trắc nghiệm

Phân số nào bé nhất trong các phân số sau:  1 2 ; 2 2 ;  4 1 ; 1 4

A.  1 2

B.  2 2

C.  4 1

D.  1 4

Having a robot is so convenient that many people buy one.

A. Many people buy a robot but it’s convenient.

B. Many people buy a robot and it’s convenient.

C. Many people buy a robot because it’s convenient.

D. Many people buy a robot although it’s convenient.