人体结构和功能的基础单位是()。
A.蛋白质
B.核酸
C.葡萄糖
D.脂肪
E.细胞
参考答案:E
围绝经期妇女,子宫不大, * * 不规则流血。首先考虑()
A.无排卵性功血
B.子宫黏膜下肌瘤
C.子宫内膜炎
D.血液疾病
E.有排卵性功血
―There is too much salt in the Chinese diet.
―Right. The WHO says only 1.5 grams of salt ______ for each man every day.
A.is needed
B.needs
C.will need
D.has needed