Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions
The organs of taste are the________that are mainly located on the tongue.

A. groups of cells are taste buds

B. Taste buds are groups of cells

C. Taste buds, these are groups of cells

D. Taste buds, groups of cells

Mark the letter A, B, C or D on your answer sheet to indicate the word(s) CLOSET in meaning to the underlined word(s) in each of the following questions.

My mom is always bad-tempered when I leave my room untidy.

A. very happy and satisfied

B. talking too much

C. feeling embarrassed

D. easily annoyed or irritated

Choose the word (A, B, C, D) whose primary stress is on a different position from that of the others in each group below.

A. evaporate

B. consulate

C. contemplate

D. coordinate

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

Everyone knows about pollution problems, but not many people have______any solutions.

A. looked into

B. come up with

C. thought over

D. got round to

Phương trình nào dưới đây nhận hai số phức 1 + 2 i  và 1 - 2 i  làm nghiệm?

A.  z 2 + 2 z + 3 = 0

B.  z 2 - 2 z - 3 = 0

C.  z 2 - 2 z + 3 = 0

D.  z 2 + 2 z - 3 = 0