埃及的农耕区、人口、城市主要集中在 （ ）
A：地中海沿岸
B：红海沿岸
C：尼罗河谷地及三角洲
D：西奈半岛
Fresh food is good for you. But you have to it first because sometimes it is a little dirty.
A．氮气；B．干冰；C．蛋白质；D．小苏打；E．聚乙烯．
