We can never expect ____ bluer sky unless we create _____less polluted world.
| A．a; a | B．a; the | C．the; a | D．the; the |
Premier Li Keqiang urges that we should all seek to live in a world of multi-civilizations.
| A．in vain | B．in comfort |
| C．in harmony | D．in defense |
In the world today, local conflicts and terrorist attacks are constantly .
| A．dying out | B．bursting out |
| C．running out | D．giving out |
To everyone’s surprise, the CEO fled to the U.S, his company in a mess.
| A．left | B．leaving | C．to leave | D．having left |
A research found that both intelligence and wealth were to education.
| A．similar | B．contrary | C．apparent | D．relative |
Half a century ago, parts of the Thames were “biologically dead” because of the pollution.
| A．declared | B．imagined | C．sensed | D．marked |