The problem of the present world is that those who are imaginative have little experience
__________those who are experienced have weak imagination.
| A．unless | B．although | C．because | D．while |
Schools across China are expected to hire 50,000 college graduates this year as short-term teachers __________increase job opportunities.
| A．help | B．to have helped | C．to help | D．having helped |
The get-together after tem years of separation should be a（n）__________of excitement, but the old friends could not feel real joy.
| A．situation | B．occasion | C．atmosphere | D．condition |
Economy should be developed to raise people’s living standard.__________, effective measures should be taken to deal with different types of pollution caused by the economic development.
| A．Moreover | B．Therefore | C．Meanwhile | D．Otherwise |
Only lately__________about the dark secrets behind the seemingly-happy marriage of the golf star Tiger Woods.
| A．the public have known | B．were the public known |
| C．have the public known | D．the public knew |