能抑制骨吸收的药物是()
A.雌激素制剂
B.雷洛昔芬
C.甲状旁腺激素
D.鲑鱼降钙素
E.鳗鱼降钙素
参考答案:A, B, D, E
______ 2010 Shanghai World Expo is a perfect opportunity to get ______ panoramic (全景的) view of the whole world without traveling thousands of miles.
A./; the
B.The; the
C.The; a
D./; a
下列物质性质递变正确的是( )
A.原子半径:C、Al、K依次增大
B.热稳定性:HF、NH3、SiH4依次增强
C.水化物的酸碱性:NaOH、Al(OH)3、Mg(OH)2碱性减弱
D.非金属性:Cl、P、S依次增强