Câu hỏi: Mounting evidence indicates that acid rain is damaging historic sites in Boston and Philadelphia.

A. Hanging

B. Tentative

C. Increasing

D. Irrefutable

Câu 1: A multitude of people attended the fund-raising presentation in the mall.

A. small number

B. select group

C. huge crowd

D. large herd

Câu 2: John was not promoted because his work did not meet the manager's expectations.

A. anticipations

B. expenditures

C. expertise

D. gaudiness

Câu 3: The activists were accused of contaminating the minds of our young people.

A. providing healthy ideas

B. harming

C. nurturing

D. keeping in the dark

Câu 4: Relaxation therapy teaches one not to fret over small problems.

A. worry about

B. get angry about

C. get involved in

D. look for

Câu 5: Primary education in the United States is compulsory

A. free of charge

B. required

C. excellent

D. easy

Câu 6: The copperhead, a snake that strikes without warning, is considered more dangerous than the rattlesnake.

A. exquisite

B. sporadic

C. treacherous

D. aloof