最常伴胎儿重大先天性畸形的情况是（） A.非螺旋状脐血管 B.单脐动脉 C.脐带过长

2010年6月11日，第19届世界杯足球赛在南非开幕。不少中国球迷看完朝鲜对阵巴西后，感慨万千。有网友说，尽管薪水微薄，还用编织袋搬运行李，可是朝鲜队依然拥有着饱满的尊严感、拼搏感和国家使命感，敢于与巨头巴西对阵并进球；而我们国足，清一色的LV，除了拥有着饱满的金钱以外，还有什么？网友的评价主要是在强调

A．宽裕的物质条件滋生了颓废的意识

B．意识对于人体生理活动具有调节和控制作用

C．主观能动性发挥的程度决定事物发展的程度

D．正确的意识能直接促进客观事物的发展

下列哪项不是男性不育的原因

A．内分泌和染色体异常

B．精索静脉曲张

C．膀胱结石

D．长期接触放射线

E．精液异常

短文填题。

     Nowadays, almost everyone has been   1   (意识到)that smoking               

does     2   to people's health. Sometimes it can even cause fire.                       

      In China, about 36% of the people smoke. Every year, they s   3                 

millions of packets of   4    . It's bad news for the health of the nation.         

      It's known that smoking can l   5    to different kinds of disease.                   

Every year, many people die of these illnesses, such as lung and throat cancers.

 It also    6   (使失去) the government large sums of money to attend              

these sick people. As  7    , smoking is harmful to those people                        

   8   don't smoke, especially to children and women.                                      

     In a   9    , smoking bring people no good. If you want to smoke,            

just think of those s  10    from diseases and the fires that destroy               

 people's lives and properties.

简述网际关系的特征。

喷油泵柱塞弹簧断裂，导致柴油机（）。