（2011安徽芜湖，8题）今年5月1日开始，醉酒驾驶机动车辆将被依法追究刑事责任。每100mL血液中酒精含量达到80mg时即为醉酒（血液的pH约为7.4）。关于
与椭圆共焦点且过点的双曲线方程是 A． B． C． D．
下图为肉眼看到的幼苗的幼根，请据图回答问题： (1)肉眼可见的白色绒毛是________，数量很多，使根增大了与土壤的________________，有利于根对____________
哲学上的物质概念是指（ ） A.具体的物质形态 B.无法被人感知的客观存在 C.人们能看得见、摸得着的东西
When Stephen Hawking published A Brief History of Time in 1989, the reactions of the public were quite different from those of scientific circles. People who were not scientists described the book
It is ______ any wonder that his friend doesn’t like watching television much.A. no B. such C. nearly D. hardly
下列符合上海市住宅区位变化趋势的是（ ） A．向市中心移动 B．向上海市周边匀速扩散 C．沿江
的导数是
B.
D.
