of the leaves and tree bark which today is known to 6.__________
contain salicylates, the chemical in aspirin. during the
19th century, there was a great number of experimentation 7.__________
in Europe with this chemical, and it led in the introduction 8.__________
of aspirin. By 1915, aspirin tablets were available
in the United States.
A small quantity of aspirin(two five-grain tablets)
relieves pain and inflammation. It also reduces down 9.__________
fever by interfering with some of the body's reactions.
Specifically, aspirin seems to slow down the formation
of the acids involved in pain and the complex chemical
reactions that cause fever. The chemistry of these acids
is not fully understood, and the slowing effect of aspirin 10.__________
is well known.
参考答案
1. of ∧ safest → the
2. medicines → medicine(or: drug)
3. suffered → suffering
4. if → though(or: although)
5. between → among
6. is → are
7. number → deal(or: amount,quantity)
8. in → to
9. down → /
10. and → but
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