口气酸臭,脘腹胀满的临床意义是()。
A.脾胃蕴热
B.肠中蕴热
C.食积胃肠
D.胃有脓疡
E.口腔不洁
参考答案:C
I'd rather read than watch television; the programs seem ______ all the time.
A.to get worse
B.getting worse
C.to have got worse
D.to be getting worse
设,其中函数f具有二阶连续偏导数,求。