一般网上商店习惯用()方法与客户联系。
A、传真
B、电话
C、上门确认
D、电子邮件
参考答案:D
In ancient times, people rarely travelled long distances and most farmers only travelled ________ the
local market.[ ]
A. longer than
B. more than
C. as much as
D. as far as
评价营养不良最早的敏感指标是()。
A.白蛋白
B.球蛋白
C.总蛋白
D.转铁蛋白
E.视黄醇结合蛋白质