我国某山脉,山北以旱地为主,山南以水田为主;山北树木冬季落叶,山南树木常绿;山南水牛耕田,山北黄牛耕地。该山脉是[ ]
A.大兴安岭
B.天山
C.秦岭
D.南岭
答案:C
One reason for her preference for city life is ________ she can have easy access to places like shops and restaurants.[ ]
A.that
B.how
C.what
D.why
下列黄酮类母核不具有颜色的是()
A.黄酮
B.黄酮醇
C.查耳酮
D.二氢黄酮
E.二氢黄酮醇