1 . Greenhouse gases have been speeding up the process of global warming and        our climate.

A．affecting

B．challenging

C．promoting

D．creating

2 . Tom told me that he would ________ in my project if I could give him a plan for the project with more details.

A．compete

B．decrease

C．invest

D．occupy

3 . We mention it for completeness only, so you may ______ this case.

A．assume

B．ignore

C．observe

D．settle

5 . The house on the hill ________ the valley, where you can enjoy a splendid view.

A．ignores

B．admires

C．appreciates

D．overlooks

6 . John was such a naughty boy that his mother had to tell him to ____ himself again and again before taking him to a party.

A．behave

B．enjoy

C．conduct

D．entertain

8 . Students cannot________knowledge unless they study, just as farmers cannot harvest unless they till and sow.

A．achieve

B．acquire

C．require

D．request

9 . You’d better try kinds of ways to ________ you ideas________ to the audience and speak loudly to make yourself________ in a speech.

A．get...through, to hear	B．get...across, hearing
C．get...down, hear	D．get...across, heard

10 . The challenge we are faced with is to________ knowledge into action.

A．combine

B．transform

C．bring

D．get