慢性肾衰竭患者常出现()
A.血磷升高、血钙升高
B.血磷升高、血钙降低
C.血磷降低、血钙升高
D.血磷降低、血钙降低
E.血磷正常、血钙升高
参考答案:B
—What's up? You didn't pick up the phone just now.
—I'm sorry that I ________ dancing with music on, but it's done now.
A.practised
B.was practising
C.am practising
D.have practiced
在神学笼罩的黑暗中,随着欧洲封建社会的衰落和新兴资产阶级的产生,思想文化的巨人 向愚昧和无知发起了挑战。这一挑战的先驱是
A.伏尔泰
B.但丁
C.达·芬奇
D.莎士比亚