When the chemicals inside a cell no longer produce ions, the cell stops to function.

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.

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

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

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