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刷刷题刷刷变学霸
举一反三
【单选题】Many national parks in the west areas of America are among the United States, most treasured natural spaces．From Yellowstone to Yosemite, US national parks stand as monuments to Americans, love of nat...
A.
Americans' cherish their legendary Wild West
B.
the recognition of the importance of these parks
C.
Americans' love of nature and spiritual connection to the land
D.
the appreciation of the beauty and recreation of these places
【单选题】在经济周期的不同阶段，可以观察到的债券收益率曲线有()。 1.正向的利率曲线 2.相反的利率曲线 3.平直的利率曲线 4.拱形利率曲线
A.
1.2
B.
3.4
C.
1.2.3
D.
1. 2. 3. 4