能在内吞体的pH环境中释出其配体,并进入再循环过程的受体是()。
A.甘露糖受体
B.FcgRⅡ
C.mIg
D.上列A和B两项
E.上列A、B和C三项
参考答案:A
Without facts,we cannot form a worthwhile opinion,for we need to have factual knowledge ______ our thinking.
A.upon which to base
B.which to be based on
C.which to base on
D.to which to be based on
目前发现中国最早的壁画出土于()。
A.秦都咸阳
B.西汉长安城
C.东汉洛阳城
D.北魏洛阳城