X. Mark the letter A, B, C or D on your answer sheets to show the underlined part that needs correction.
Câu 1: Human memory (A), formerly was believed (B ) to be rather inefficient, (C) is really much more sophisticated than that of a (D) contputer.
A. Human memory
B. was believed
C. inefficient
D. a
Câu 2: Babies show numerical competence (A) almost (B) from the day they are born, and some younger infants (C) than six months have shown they can perform a rudimentary (D) kind of addition and subtraction.
A. numerical competence
B. almost
C. younger infants
D. rudimentary
Câu 3: Assuring (A) the reliability and purity of the water supply (B) is one of the more significant challenges facing (C) an ever growing (D) world population.
A. Assuring
B. water supply
C. facing
D. growing
A.
B.
C.
D.