from；develop；century；use；dying；they；cheapest；began；actually；different；what

Old new medicinesWhat should you do if you have a headache？In modern times，people often take aspirin （阿司匹林）.But is aspirin（1）

actually

actually

a modern medicine？
   More than 4，000 years ago，ancient Egyptians used dried leaves to treat pain.And in the fourth century B.C.，a medicine made from tree bark（樹皮）（2）

was used

was used

to treat fevers.In the nineteenth century，European scientists discovered that both medicines have the same chemical （化學物質(zhì)）.They used the chemical to make a modern medicine-aspirin.Today，it's one of the world's（3）

cheapest

cheapest

and most helpful medicines.
   Some of the medicines we have today come（4）

from

from

traditional Chinese medicjye.aie.In the third century B.C.，some people（5）

began

began

studying the human body.They tried many（6）

different

different

ways to treat the patients and recorded（7）

their

their

results.For more than 2，000 years，doctors recorded（8）

what

what

they founded in books.These ancient books are still useful today.Tu youyou，a Chinese medical researcher，found that in the past，people used a herb with yellow flowers to treat fevers.After studying it，she developed a medicine that saved millions of people from（9）

dying

dying

.
   For（10）

centuries

centuries

，Western medicine paid little attention to traditional Chinese medicine.But today，scientists are studying traditional treatments（11）

to develop

to develop

new medicines.