判断胃酸缺乏的指标是
A．有嗳气，无反酸B．呕吐物无酸C．进餐后明显腹胀D．基础胃酸分泌(BAO)为零E．最大胃酸分泌(MAO)为零
参考答案：E
有4名优秀学生A、B、C、D全部被保送到甲、乙、丙3所学校，每所学校至少去一名，且A生不去甲校，则不同的保送方案有（ ）
A．24种
B．30种
C．36种
D．48种
Unsatisfied ________ with the payment, he took the job just to get some work experience.[ ]
A. though was he
B. though he was
C. he was though
D. was he though
tisfied ________ with the payment, he took the job just to get some work experience.[ ]