Since 1970, the United Nations has been celebrating April 22^nd as Earth Day. It attracts millions of people worldwide to join in to promote public awareness of environmental protection.

The sentence 1, 2, 3, 4 in the following paragraph are in the wrong order. Choose the correct order to make a good paragraph.

(1) Therefore, anyone who wants to drive must carry a driver’s license. (2) It’s divided into four steps: studying the traffic laws, taking the written test, learning to drive and taking the driving test. (3) Getting a driver’s license is a complicated process. (4) Driving a car is a necessity in today’s busy society, and it is also a special privilege.

If no specific measures are taken, what is occurring to the Earth will cause all species including human race to vanish.

Mr. Gerstein was particularly taken aback to hear that sleeping problems are often linked to physical problems.

Mark the letter A, B, C, D on your answer sheet to indicate the word that differs from the rest in the position of the main stress.

“Would you mind turning down the TV? I’m working!”

“__________________________.”

The use of lasers in surgery has become relatively commonplace in recent years.