Agriculture _____ about 14 percent of global greenhouse gas emissions, and transporting the food around adds to the environmental cost.

A. cares for      B. applies for

C. accounts for      D. answers for

— Can I pay the bill by check?

— Sorry, sir. But it's the management rules of our hotel that payment ______be made in cash.

A. can                                    B. need                                 C. will                                    D. shall

-----What about today’s temperature?

------It’s the same as, if the weather report is exact as usual, _____ of yesterday.

A. one       B. that        C. ones        D. those

Rock-climbing is a breathtaking activity, very popular nationwide among young people, ______ cooperation as well as courage plays an important role.

A. who          B. which      C. where        D. of which

The question that puzzled them is ____ they can get rid of the air pollution in the area.

A. how is it that    B. that is how     C. what is that      D. how it is that

－When will the expert come and give the lecture on economic development 

－Not until our program ____by the government

A. approves                         B. is to approve

C. will be approved  D. has been approved

- - How dangerous it was!

- - Yes, but for the passer - by' s quick action, the girl _____

A．was drowned                       B．could have been drowned

C．had drowned                          D．should be drowned

Looking back on the three - year life in the mountain village, Thomas          it as a milestone in his personal development

A．values       B．confirms    C．declares     D．assumes

      you may have , you should gather your courage to face the challenge .

A. However serious a problem                              B. Whatever serious a problem

C. However a serious problem                              D. No matter how a serious problem

Some very common things such as     to the sun for a long time will do harm to people's skin and even cause skin cancer

A．exposing  B．being exposed    C．having exposed          D．exposed