当地球公转到A位置时
A.华北冬小麦开始返青
B.太阳直射点在赤道上
C.这一天称为春分日
D.枣庄物体的影子达一年中最短
答案:D
— What do you want to eat for lunch? I will prepare earlier today.
— Honey, you_____. Let’s go out to have something different.
A.mustn’t
B.can’t
C.shouldn’t
D.don’t have to
对尿干化学法测定蛋白、比密、亚硝酸盐结果均有干扰的是 ()
A.维生素C
B.白细胞
C.pH
D.亚硝酸盐
E.上皮细胞