完形填空（共20小题；每小题1.5分，满分30分）
阅读下面短文，掌握其大意，从短文后所给的四个选项（A、B、C和D）中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑
Have you heard of “Green hotels”?   36    you stay at a green hotel, you help reduce the unfriendly   37   that hotel has on the environment.
“Green hotels” include any hotels, motels, and inns that use energy and other resources   38   environmentally (环境) responsible ways. These green hotels take advantage of (利用)   39   resources when possible, make effective   40   of resources that can’t be reused, and   41  that many byproducts(副产品)are reused or recycled.
__42  2.6 million hotel rooms are rented in the United States daily.  43  , an astonishing number of hotel   44   need clothes washed, meals prepared, fresh water for showers and toilets, and energy for lights, heating, and cooling. Thus, there is a great       _45  for green hotel practices(做法).
46    a guest of a green hotel, you will receive quality service  47    knowing you are helping the environment. Hotels also realize cost savings when they  48   green hotel practices, which they can then use to   49    guest services.
Some green hotels are already making a big   50   . For example;
1. By switching to more energy-effective  51   , the Waldorf-Astoria in New York City has saved 1.2 million kilowatt hours per year.
2. One hotel reduced water use by 2 million gallons per year when it   52    a chef (厨师)who was improperly defrosting(解冻)food by running water over it.
3. The Fairmont Acapulco Princess and Fairmont Pierre Marques filter(过滤器) and treat
53    and reuse it to water their golf courses.
These and other green hotels are   54   responsible steps, but many others have not yet accepted the green hotel challenge. You can help by supporting green hotel practices every time you  55   .
36. A. When                      B. Before                  C. Unless                            D. Although
37. A. pollution                  B. cost                        C. effect                               D. step
38. A. with                          B. through                 C. by                                     D. in
39. A. wasted                     B. reused                   C. limited                   D. lost
40. A. time                          B. space                     C. use                                   D. usage
41. A. make sure               B. make up                C. make fun                        D. make room
42. A. Much more             B. Over                       C. More                               D. Above
43. A. Besides                   B. As a result            C. In the end                       D. As a matter of fact
44. A. professors               B. waiters                  C. door-keepers                 D. guests
45. A. need                         B. necessity             C. require                              D. request
46. A. With                         B. To                            C. As                                     D. By
47. A. before                      B. at                           C. in                                     D. while
48. A. get                           B. accept                    C. receive                            D. take
49. A. change                     B. improve                 C. make                               D. lift
50. A. act                           B. face                        C. control                               D. difference
51. A. lighting                   B. line                         C. action                              D. management
52. A. used                          B. found                      C. fired                                 D. questioned
53. A. wastewood             B. wasteland             C. wastepaper                            D. wastewater
54. A. making                    B. taking                     C. borrowing                      D. getting
55. A. walk                          B. journey                  C. play                                  D. travel