正常肾小球滤过膜允许顺利通过的蛋白质分子量为()。
A.3万~5万
B.小于2万~4万
C.大于3万
D.6万~8万
E.小于1万
参考答案:B
At the beginning of class, the noise of desks _____ could be heard outside the classroom.
A.opened and closed
B.to be opened and closed
C.being opened and closed
D.to open and close
古诗文填空。(五题任选做四题)(8分)
(1) ,知来者之可追。 ,觉今是而昨非。
(2) ,响穷彭蠡之滨;雁阵惊寒, 。(3) , 。俨骖騑于上路,访风景于崇阿。
(4) , 。臣不胜犬马怖惧之情,谨拜表以闻!
(5)诏书特下, 。寻蒙国恩, 。