完形填空: 从每小题A、B、C三个选项中，选出能填入空白处的最佳答案。

   A cold is a common illness. It often starts 1 a sore throat. You sneeze（打喷嚏）and your nose runs. You usually2 a headache, too. It's not a serious illness, but you can feel very 3.

   What should you do when you have a cold? You should have a good rest. It is good 4 a lot of water, too. You can go to see a 5 and take some medicine. Maybe you can try some Chinese medicine. Chinese medicine is now very 6 all over the world.

   Where does Chinese medicine 7? A long time ago, when people 8 feeling well, they found that some 9 could make them feel better. They ate the roots（根）, the leaves, 10 the seeds of the plants. Today people make much Chinese medicine from those plants.