4．Never concentrate all your attention on one or two problems，to the exclusion of others．

5．This is the last thing I will do．

6．Such instances are few．

7．There is no smoke without fire．

8．You will never succeed unless you work hard．

9．There is no grammatical rule that does not have exceptions．

10．There is nothing unusual there．

11．The speed of light is too great to be measured with a simple unit．

12．It was more than I could bear．

13．That kind of person is anything but a visiting scholar．

14．The Red Army soldiers would rather die than surrender．

15．Her father is now between jobs．

Ⅱ．Passage translation．

The mighty Pacific washes the shores of the continents—North America，South America，Asia，Australia，and Antarctica．Its waters mingle in the southeast with the Atlantic Ocean and in the southwest with the Indian Ocean．It is not on the shores of continents or in the coastal islands，however，that the soul of the great Pacific is found．It lies far out where the fabled South Sea Islands are scattered over the huge ocean like stars in the sky．

Here great disturbances at the heart of the earth caused mountains and volcanoes to rise above the water．For hundreds of years tiny coral creatures have worked and died to make thousands of ring-shaped islands called atolls．

The air that sweeps the South Sea Islands is fragrant with flowers and spice．Bright warm days follow clear cool nights，and the rolling swells break in a never-ending roar on the shores．Overhead the slender coconut palms whisper their drowsy song．

When white men first came to the Pacific islands，they found that the people living there were like happy children．They were tall men and beautiful women who seemed not to have a care in the world．Coconut palms and breadfruit trees grew at the doors of their huts．The ocean was filled with turtles and fish，ready for the net．The islanders had little need for clothing．There was almost no disease．

Cruel and bloody wars sometimes broke out between neighboring tribes，and canoe raids were sometimes made on nearby islands．The strong warriors enjoyed fighting．Many of the islanders were cannibals，who cooked and ate the enemies they killed．This was part of their law and religion．These savages，however，were usually friendly，courteous，and hospitable．Some of the early explorers were so fascinated with the Pacific islands that they never returned to their own countries．They preferred to stay．

3．1．8 Exercises练习

3．1．8　Exercises练习