D. circumstances

　　15．—Jack，you seem in high spirits.________We won the match 4∶0.

　　A. Guess what?

　　B. So what?

　　C. No wonder.

　　D. No double.

　　Ⅱ.阅读理解in the southwest of America. Nature has created huge moving hills of pure white sand. These sand dunes cover more than seventy­thousand hectares of desert.

　　It is one of the largest sand dune fields in the United States. The bright white sand dunes are always changing，always moving, like waves on the ocean.Driven by strong winds, the sand moves and covers everything in its path. It is like a huge sea of sand.ts and animals struggle to survive. A few kinds of plants grow quickly to survive burial by the moving sand dunes. Several kinds of small animals have become white in color in order to hide in the sand.

　　More than five hundred thousand people visit White Sands each year. They climb on the dunes and observe the moving sea of sand.

　　White Sands is about twenty four kilometers southeast of the city of Alamogordo, New Mexico. In the visitor center at the entrance of the park, you can find out special activities and guided walks. You can drive about thirteen kilometers into the center of the dunes. It is like driving on a lonely white planet.Along the way there is information that tells about the natural history of White Sands.

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