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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】关于徒长说法错误的是( )
A.
子叶期的湿度不能太大
B.
出苗后应该及时降低夜温
C.
必要时可在播种前浇灌底水时添加低浓度矮壮素
D.
发生后应及时控制浇水,提高室温