下列营养物质中可以通过细胞膜的是
①淀粉 ②葡萄糖 ③蛋白质 ④脂肪 ⑤氧气 ⑥水 [ ]
A．①②③⑤
B．②③⑤⑥
C．②⑤⑥
D．⑤⑥
C
六盘山是我区夏季避暑的好地方，这是因为（ ）
A．六盘山纬度位置低
B．六盘山海拔高
C．六盘山离海近
D．六盘山地势低
Rick is ________ young ________ go to school. Don't you think so? [ ]
A. too; to
B. so; that
C. such; that
D. as; to
