Only after she had finished the course did she realize she _____ a wrong choice.

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.

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.

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

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