1 . 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。

2 . 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。

3 . 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。

4 . 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.

5 . 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.

6 . 唯有如此，互联网才能成为每个人的发现之地、奇妙之所、灵感之源。
Only in this way _______ the Internet ________a place of discovery, wonder and inspiration for everyone.

7 . 为了买一双理想的靴子，一家店接一家店去找的日子已经一去不复返了，你可以舒舒服服地待在自家客厅里比较款式和价格，省时省力。
________ ________ the days of searching shop after shop for the perfect pair of boots—you can compare styles and prices quickly and easily in the comfort of your living room.

8 . 点名确认所有人都安然无恙后，大家才松了一口气，笑啊，哭啊，互相拥抱着。
After a roll call ________ that all were safe and sound, they relaxed, laughing, crying and ________ each other.

9 . Over the past 50 years, about 17 per cent of the rainforest ________ ________ ________ _______ human activities such as agriculture and cattle farming.
在过去的50年里，由于农耕和养牛等人类活动，大约17%的雨林已经消失。

10 . The forest’s different levels support an _________ __________ of wildlife.
雨林的不同层次养活的野生动物种类多到难以置信。