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: There is growing concern about the way man has destroyed the environment.

A. attraction

B. worry

C. disinterest

D. careless

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

A. purchase

B. get

C. sell

D. give

Câu 3: We know not what is good until we have lost it.

A. find

B. count

C. guess

D. learn

Câu 4: 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 5: I love it when someone's laughter is funnier than the joke.

A. cry

B. shout

C. smile

D. frown

Câu 6: Last night they stayed at home and watched TV.

A. day

B. noon

C. midnight

D. morning