1 . There was __________ explosion of bright colors and lively music, and the group jumped into action. (用适当的词填空)

2 . 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.

4 . We practise earthquake safety ________ (程序，步骤) twice a year, so the kids were calm enough to protect themselves during the earthquake. (根据汉语提示单词拼写)

5 . As the impact of human activities continues to grow and the list of species in danger of ________ (灭绝，绝种) becomes longer, we are left with a question: can we afford to damage the “lungs of the planet”? (根据汉语提示单词拼写)

6 . Now, we scientists ________ _________ ______ ______ _______ it is perfectly possible to live and not know.
如今，我们科学家理所当然地认为，生而有所不知是完全有可能的。

7 . In November 1972, through ________ ________ ________, they successfully discovered qinghaosu—the most effective part of the qinghao extract.
1972年11月，经过反复试验，他们成功发现了青蒿素—青蒿提取物中最有效的成分。

8 . When they failed to produce any promising results, Tu _________ _________ the ancient books of traditional Chinese medicine again.
当这些未能取得任何有希望的效果时，屠呦呦就再次查阅中医典籍。

9 . 眼睛不再盯着手机，我们得以真正享受彼此的陪伴。
________ eyes no longer________ on our phones, we had a chance to really enjoy each other’s company.

10 . 陷入这种习惯很容易，戒掉它却很难。
_________ into the habit was easy, but it was difficult to ________ the habit.