3 . 选词填空

apart from   seek one’s fortune   head to   earn a living   a series of used to   at least     bring about   a mix of   in addition

1. On hearing these words, Tom turned around and___________ his office without saying a word.
2. Determined to____________ abroad, he sold his house and boarded a plane to Canada.
3. He ___________ by doing business alone and manages to support a large family.
4. We still need to do____________ tests before the new drug is used to prevent this disease.
5. ____________ what he said, the action that he took has already given us great help.
6. As a matter of fact, the accident was____________ by John’s carelessness.
7. In the process, _____________sand, water and chemicals is pumped deep underground.
8. Mother ___________ tell us stories at bedtime when we were children.
9. Even if she didn’t want to send a present, she should____________ have sent a card.
10. He was forced to leave his country .__________, he was also forced to leave his beloved teaching career.

4 . 用下面的单词完成这篇关于医学的短文。

infection,       multiple,     decrease,     severe, transform,     proof,          blame,        substantial

British scientists believe they may have found a way to fight the common cold. It blocks a key protein in the body’s cells that is to     1     for the spread of cold-causing virus. Targeting the host rather than the     2     was a bit non-traditional but made sense because it was tricky to target the virus.

Cold-causing virus are not only of     3     kinds, they also     4     rapidly, meaning they can quickly develop resistance to medicine. Researchers are working on making a form of medicine that can be taken directly into one’s lungs, to     5     the chance of side effects. Though these scientists have made     6     advances in their research, further     7     is needed to make sure such drugs are not so     8     that they harm the body.