血液具有（）的功能。
A、携带二氧化碳到体内各细胞
B、帮助平衡体内温度
C、从全身组织、器官中带走氧气和废物
D、储存营养物质
参考答案：B
2009年12月9日，武广高速客运专线正式开通，最高时速达到394公里，成为相关路线强有力的客运竞争对手。武广客运专线开通后，相关航线的机票需求量和价格可能发生的变化是
A．需求减少，价格上升
B．需求增加，价格下降
C．需求减少，价格下降
D．需求增加，价格上升
读下面的句子,然后将它们按顺序排列成对话。
__1__ Sure. The fashion show will start at 10:30 tomorrow morning in Zhongguancun Shopping Center.
__2__ Hi. Michael. we are going to watch a fashion show tomorrow. Would you like to go with as?
__3__ How do you know that?
__4__ I read the poster. it also says many famous model are going there to model the clothes.
__5__ A fashion show? Sounds interesting. could you tell me when and where?
