向十二指肠内注入大量HCl可引起（）
A.肠液分泌
B.胃液分泌
C.胰液与胆汁大量分泌
D.胃运动增强
E.唾液分泌
参考答案：A, C
将下列句子按逻辑顺序排列。
A. Let's go back home and take the ID cards.
B. Really? Why nor?
C. So did I. Let' s go to the party. Time is up!
D. If we don't have our ID cards , we can't go to the party.
E. Oh, we can't do that.
F. Oh. My God. I forgot to take my ID card.
正确的顺序是：____________________________
设区域D由y=x2，y=0，x=1所围成，则=（）。
A．A
B．B
C．C
D．D
=（）。