我国最早的学校教育机构是( )
A.痒
B.序
C.校
D.学
参考答案:A
饮用牛奶后,常引起肠胃不适、胀气、痉挛、腹泻等不良反应,主要原因是()
A.淀粉酶缺乏或活性降低
B.乳糖酶缺乏或活性降低
C.麦芽糖酶缺乏或活性降低
D.凝乳酶缺乏或活性降低
— _____
— He is a bank clerk. [ ]
A. Why does he like koalas?
B. What does your father look like?
C. Where is your father from?
D. What does your father do?