学校锅炉房运来x吨煤,原计划每天烧y吨,可以烧( )天,现在每天节约a吨,实际可以烧( )天。
x÷y;x÷(y-a)
Busy and successful as he was, the novelist was willing to _____ any promising young man and give him
all the help he could. [ ]
A. take up
B. pick up
C. make up
D. look up
关于肺癌,下列哪项是正确的()
A.鳞癌对放疗和化疗不敏感
B.鳞癌通常首先经血行转移
C.腺癌在晚期才发生血行转移
D.未分化癌对放疗和化疗较敏感
E.未分化癌淋巴和血行转移较晚