1. Typical of the grassland dwellers of the continent is the American antelope, or pronghorn.

　　1.美洲羚羊，或稱叉角羚，是該大陸典型的草原動物。

　　2. Of the millions who saw Haley’s comet in 1986, how many people will live long enough to see it return in the twenty-first century.

　　2. 1986年看見哈雷慧星的千百萬人當中，有多少人能夠長壽到足以目睹它在二十一世紀的回歸呢?

　　3. Anthropologists have discovered that fear, happiness, sadness, and surprise are universally reflected in facial expressions.

　　3.人類學家們已經(jīng)發(fā)現(xiàn)，恐懼，快樂，悲傷和驚奇都會行之于色，這在全人類是共通的。

　　4. Because of its irritating effect on humans, the use of phenol as a general antiseptic has been largely discontinued.

　　4.由于苯酚對人體帶有刺激性作用，它基本上已不再被當作常用的防腐劑了。

　　5. In group to remain in existence, a profit-making organization must, in the long run, produce something consumers consider useful or desirable.

　　5.任何盈利組織若要生存，最終都必須生產(chǎn)出消費者可用或需要的產(chǎn)品。