Câu hỏi: How different a picture we now have of the ocean as the sea has begun to reveal its secrets.

A. public

B. opening

C. knowledge

D. schooling

Câu 1: At times, this can be risky, and the keepers have been injured and one has been killed.

A. good

B. useful

C. healthy

D. secure

Câu 2: Kevin stopped to buy the evening paper from a news vendor.

A. purchase

B. get

C. sell

D. give

Câu 3: Advanced students need to be aware of the important of collocation.

A. of high level

B. of great important

C. of low level

D. of steady progress

Câu 4: Man alone is born crying, lives complaining, and dies disappointed.

A. together

B. lonely

C. altogether

D. total

Câu 5: They don't seem particularly worried about the situation.

A. concerned

B. pleased

C. frightened

D. excited

Câu 6: He had never experienced such rudeness towards the president as it occurred at the annual meeting in May.

A. thought

B. hostility

C. care

D. politeness