胆囊结石的典型表现包括()。
A.WES三合征
B.强回声光团后方声影,移动实验阳性
C.彗星尾征
D.改变体位不移动
E.体位移动形状改变
参考答案:B
Because the head-teacher had some important guests to meet, the meeting only _______a few minutes.
A.kept
B.continued
C.lasted
D.covered
下列激素中抑制胃酸、胃蛋白酶和胃液分泌的是 ()
A.抑胃肽
B.促胰液素
C.缩胆囊素
D.促胃液素
E.血管活性肠肽