She __________ her notes before the examination and tried to recite some important points.
| A．looked for | B．looked up |
| C．looked through | D．looked into |
In the global economy, a new drug for cancer, ______ it is discovered, will create many economic possibilities around the world.
| A．whatever | B．whoever | C．wherever | D．whichever |
Anyone, once ____ positive for H7N9 flu virus, will receive free medical treatment from our government.
| A．to be tested | B．being tested | C．tested | D．to test |
（2013·北京卷)I took my driving license with me on holiday, I wanted to hire a car.
| A．in case | B．even if | C．ever since | D．if only |
“You can’t judge a book by its cover,” ________ .
| A．as the saying goes old | B．goes as the old saying |
| C．as the old saying goes | D．goes as old the saying |
（2013·安徽卷)From space, the earth looks blue. This is about seventy-one percent of its surface is covered by water.
| A．why | B．how | C．because | D．whether |