有关黄土高原位置和范围的叙述,正确的是 [ ]
A.东起太行山,西至乌鞘岭
B.北起内蒙古高原,南至长江北岸
C.东起华北平原,西至青藏高原
D.北抵阴山,南至秦岭
答案:A
________ the party was a great honor to the family.
A.Being invited to
B.Inviting to
C.Invited to
D.To be invited to
牛的毛色遗传黑色对棕色是显性,要确定一头黑母牛是否为纯合子,选用和它交配的牛最好是()
A.棕色公牛
B.纯种黑公牛
C.杂种黑公牛
D.杂色花公牛