Through painstaking effort, they at last worked out a way to_______that substance. (pure)

你与你妹妹长得如此相像，我经常会误把她当作你。

TOPIC: Explain the reasons why people have changed from hero-worship to celebrity-worship based on the text “Icons.” You can use this outline:

● The distinctions between a hero and a celebrity;

● The development in mass media that results in such a change.

我希望你对这一多数人做出的决定给予更多的尊重。

有些人的皮肤很敏感，即使是少置的日晒都能导致晒伤。

科技改变着我们的生活方式，为我们带来了更多的便利。

他说话带有浓重的地方口音，我很难听懂。

Although she is not officially our boss, she is in_______control of the office. (effect)

He resigned suddenly, leaving the company's financial affairs in complete______.(order)

We must be careful not to do anything that might________the economic recovery. (danger)

Through painstaking effort, they at last worked out a way to_______that substance. (pure)