下列仪器:①量筒 ②表面皿 ③烧杯 ④试管 ⑤容量瓶 ⑥蒸发皿 ⑦坩埚 ⑧烧瓶,能直接用酒精灯加热的是( )
A.②③④⑥⑦⑧
B.③④⑥⑦⑧
C.④⑥⑦
D.④⑦⑧
答案:C
Does a tiger a trunk?[ ]
A. has
B. have
C. to have
谷物食品与大豆食品的营养特点有何不同?为何说二者是很好的互补食品?