关于叶酸缺乏的病因,应除外:()
A.慢性腹泻
B.长期使用氨甲蝶呤
C.长期服用广谱抗生素
D.未经加热的鲜牛乳喂养
E.婴儿单纯乳制品喂养未及时添加辅食
参考答案:D
—I’ll talk to my son Bill about it as soon as possible. He usually listens.
—We need _______ listening. We need action.
A.more than
B.less than
C.not more than
D.no more than
银行汇票的背书转让以()为准。
A、出票金额
B、申请书票面金额
C、实际结算金额
D、结算金额