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主谓一致部分在线练习(2)


[日期： 2006-10-25 ] 来源：   作者： [字体：大 中 小]

Subject/Verb Agreement

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  1. The use of vitamin supplements and herbs (be) ___ becoming increasingly popular among Americans.

  2. While many studies claim that vitamins and herbs can improve health, there (be) ___ a lot of controversy about their safety.

  3. The Food and Drug Administration (FDA) (do) ___ not regulate vitamins and herbs.

  4. Most experts (believe) ___ that herbal supplements are mild and somewhat harmless.

  5. Still, anyone who (take) ___ too much of a vitamin or herb could suffer negative side effects.

  6. For example, some medical problems (have) ___ been linked to overuse of ephedra, an herb taken by people to lose weight.

  7. Some research (suggest) ___ that Vitamin C may help prevent cancer.

  8. People who (take) ___ more than 1,000 miligrams of vitamin C daily may experience diarrhea or kidney stones.

  9. Advertisers say that the herb "kava kava" (reduce) ___ anxiety and insomnia.

  10. Using large amounts of kava kava (be) ___ not wise as muscle, eye or skin problems could result.

  11. The danger of long-term use of vitamins and herbs (be) ___ still unknown.

  12. There (be) ___ a lot of evidence that vitamin-rich foods are beneficial.

  13. However, whether the use of supplements (be) ___ helpful or not is still being debated.

  14. Most people (be) ___ able to get all the vitamins they need in the foods they eat.

  15. A daily diet that (contain) ___ foods from the 4 groups should supply all the nutrients a person needs.

  16. Eating 5 servings of fruits and vegetables daily (be) ___ said to provide all the essential vitamins we require.

  17. The best way to get the necessary vitamins and minerals (be) ___ naturally, through a healthy diet.

  18. Talking to your doctor before taking supplements (be) ___ advisable.
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