有关脱疽的记载最早见于下列哪部著作：（）
A.《诸病源候论》
B.《外科正宗》
C.《灵枢》
D.《素问》
E.《疡科心得集》
参考答案：C
购买国家重点建设债券和金融债券取得的利息收入，不计入应纳税所得额。 ( )
—Learning a language isn't easy. It takes time.
—I agree. (). There's no shortcut.
A. All roads lead to Rome
B. Rome wasn't built in a day
C. Practice makes perfect
D. Slow but sure wins the race
