Cho hàm số y=f(x) có bảng biến thiên như sau

Số nghiệm phương trình 2f(x) -3 = 0 là:

A. 2

B. 0

C. 1

D. 3

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

Question 6. They _______ tired now because they          ________ in the garden since 8 o'clock.

A. are / worked

B. were / were working

C. are / have been working

D. were / worked

Mark the letter A, B, C, or D on your answer sheet to indicate the word whose underlined part differs from the other three in pronunciation in each of the following questions.

Question 4

A. mutual

B. enthusiasm

C. rumour

D. student

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.
Question 1

A. photograph

B. photography

C. photographer

D. enthusiast