Premier Li Keqiang delivered a speech at the conference, _______ university graduates to start their own business.
| A．encouraging | B．to encourage |
| C．having encouraged | D．encouraged |
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 |
______ all the texts that are written, stored and sent electronically, a lot of them are still ending up on paper.
| A．For | B．From | C．Except | D．By |
Science is more than a collection of unrelated facts; to be meaningful and valuable, ______ must be arranged to show generalized character.
| A．which | B．those | C．it | D．they |
A warm thought suddenly came to me ______ I might use the pocket money to buy some flowers for my mother’s birthday.
| A．that | B．when | C．if | D．which |
We, ______ a discussion with the teacher, came to understand the problem better.
| A．holding | B．held | C．being held | D．having held |