1 . Hangzhou is recognized as the “City of Well-Being” in China. Hangzhou made its name ________(know) to the world in 2016 by hosting the G20 Summit. （所给词的适当形式填空）

2 . A tsunami(海啸) occurs as a series of waves _______ (know) as a “wave train,” and the series of surges (巨浪) can be five minutes or up to an hour apart. (所给词的适当形式填空)

3 . Well ______________(know) as a successful band, the Impact members show quite a few striking qualities. (所给词的适当形式填空)

4 . Mobile phone technology is quickly changing the way the world operates. Today, we talk about two new projects involving mobile health, also ________(know)as m-health.
Doctors and technology experts in London are developing a new way ________ (test) for AIDS infections. （所给词的适当形式填空）

5 . She appeared ________ the result of the competition as she showed no surprise at all when I told her that she had won the first prize. (know) （所给词的适当形式填空）

6 . Finding a target, it moves quietly through the grass until it is close enough ________(know) it can get its reward. (所给词的适当形式填空）