The rescue team didn’t leave until they were able to find no ______ of life in the ruins after the destructive quake.
| A．symbol | B．sight | C．sign | D．signature |
Unfortunately，at least 20 miners were killed,22 ________ and 13 ________ in the coal mine gas explosion.
| A．injuring；trapping | B．injured；trapped |
| C．injured；trapping | D．injuring；trapped |
—Where did you find the wallet?
—It was at the stadium ________ I played football.
| A．that | B．where |
| C．which | D．there |
The development of industry has been ________ gradual process throughout ________human existence，from stone tools to modern technology.
| A．不填；the | B．the；a |
| C．a；不填 | D．a；a |
Tu Youyou was ________ the 2011 Lasker clinical Medical Research Award on September 12 because she discovered a drug called artemisinin ________ against malaria.
| A．presented；using | B．presented；used |
| C．present；to use | D．presenting；used |
It's impossible for her to have more free time to accompany her parents because her work ______ much of their time.
| A．takes up | B．takes over | C．takes off | D．takes in |