常可引起DIC的是（）。 A.荚膜 B.内毒素 C.外毒素 D.透明质酸酶 E.杀白

阅读理解。

     In 1896, the first modern Olympic Games was held in Athens, Greece. From then on, many countries

had successfully held the Olympics, such as England, France, Germany, Canada, the U.S.A.,  Spain and

Australia. After more than a  hundred years,  the Games returned to its hometown  in  the year of  2004.

When a country hosted the Olympic Games, they always made an emblem (会 徽) . The emblem of the

Athens 2004 Olympic Games was a white circle of olive branches (橄榄枝) in the sky.

     In 2008, Beijing hosted the Olympics. Its emblem is "Jing". It means the capital of China and it is also

like a  runner or  dancer. The running figure  (人 形)  of  the  emblem  shows  the  spirit  (精 神)  of the

Olympics: Faster, higher and stronger.

根据短文内容,回答下列问题.

1.When was the first modern Olympic Games held?

_____________________________

2.What do people make when they hold the Olympic Games?

_____________________________

3.How many years passed when Athens held the Olympic Games once again?

_____________________________

4.Does the character (图案) of"Jing"mean the capital of China?

_____________________________

5.What's the spirit of the Olympic Games?

_____________________________

狗、马、猪等是我们人类最熟悉的哺乳动物，它们的外形与家兔有很大的区别，但它们也有共同的特征：______和______是哺乳动物所特有的生殖和哺育特点．

下列反应的离子方程式正确的是

A．硫化亚铁中加入稀硫酸 2H++S2－→H2S↑	B．向苯酚钠溶液中通入少量的CO2－O－＋CO2＋H2O→－OH＋HCO
C．向碳酸氢钠溶液中滴入少量石灰水 HCO+Ca2++OH－→CaCO3↓+H2O
D．向明矾溶液中加入过量的氨水 A13++3NH3·H2O→Al(OH)3↓+3NH

随着卫星科技的进步，我国气象部门对恶劣气象的预测也越来越准确。2013年9月我国气象部门对超强台风“天兔”的提前预报为我国老百姓的生产与生活提供了重要的帮助，减少了人民财产的损失。这说明

①现代科技的进步是人们认识发展的重大动力

②对自然界深入的认识是实践发展的决定因素

③借助现代科技，便于我们更好地认识和利用规律为人类造福

④利用现代科技，便于我们更好利用规律免遭自然灾害的伤害

A．②③

B．①④

C．①③

D．②④

在危险区使用的任何电器设施等均应满足什么要求？