题目

下列关于生物膜的结构特点叙述最恰当的一项是 A．构成生物膜的磷脂分子可以运动 B．构成生物膜的蛋白质分子可以运动 C．构成生物膜的磷脂分子和大多数蛋白质分子都是运动的 D．构成生物膜的磷脂分子和蛋白质分子都是静止的 答案：CAustralia is the greatest island in the world. It is a little smaller than China. It is to the south of equator（赤道）. So when it is summer in our country, it is winter in Ausrtralia.Australia is big, but the population there is thin. The population of Australia is the same as that of Shanghai.Australia is famous sheep and kangqroos. After a short dreive from any town you will find yourself in the middle of white sheep. Sheep are everywhere.1.China is than Australia.A. bigger B. small C. smaller2.It is in Australia when it is summer in our country.A. Autumn B. winter C. summer3.The population of Australia is the same as that of in China.A. Beijing B. Nanjing C. Shanghai4.Australia is famous for its .A. kangaroos B. deer C. birds5.Australia is to the south of the equator, so .A. It is the greatest island in the world. B. It's hot summer in December.C. It's population is thin.