计算[*].
参考答案:[*]
The best title for this passage would be ______.
A.Brain Waves
B.Sleep Cycles
C.Daily Activities
D.Body Activities
胃液中盐酸的作用不包括
A.激活胃蛋白酶原B.抑菌和杀菌C.使食物中蛋白质变性D.促进胰液、胆汁分泌E.不利于小肠吸收钙和铁