In a famous experiment conducted at University of Chicago in 1983, rats kept from sleeping died after two and a half weeks.

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.

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

After many year of unsuccessfully endeavoring to form his own orchestra, Glenn Miller finally achieved world fame in 1939 as a big band leader.

A. entrance  B. paddy      C. bamboo   D. banyan

The bomb exploded in the garage; fortunately no one hurt.