very good reading.

BOB DOUGHTY: This is SCIENCE IN THE NEWS, in VOA Special(bit off) English. I’m Bob Doughty.

FAITH LAPIDUS: And I’m Faith Lapidus. This week, we tell about（考虑连读） vitamins(注意长I发音, 可参考2msmom的希拉里讲话）.

(MUSIC)

BOB DOUGHTY: Many jobs must be done with two people. One person takes the lead. The other helps. It is this cooperation(bit off)that brings success.

So it is with the human body. Much of our good health depends on the cooperation between substances. When they work together, chemical reactions take place smoothly. Body systems are kept in balance.

Some of the most important helpers in the job of good health are the substances(bit off)we call vitamins.