某内陆山区省拟建一高速公路，项目路线全长134.5km，该线路经过国家一级水源保护区

阅读理解，判断正误。(正确的标T，错误的标F)

     In the front of many American homes you can see a mat (脚垫).This mat is sometimes called

"welcome mat",because many of the mats have the word "welcome" on them.

     Because Americans don't take off their shoes before going into the house,they need a welcome

mat to clean their shoes.If the children don't clean their shoes on the mat,they may be scolded (被责骂)

by their parents.If you go to an American home,please remember to clean your shoes on the mat,or you

may be told to do so."Different countries,different customs(习俗)."

( )1. There are many "welcome mats" in the front of an American home.  

( )2. Every American home has a welcome mat.                            

( )3. When Americans go into the house,they often take off their shoes.  

( )4. It's better to clean your shoes before you go into an American home.

( )5. There are different customs in different countries.                  

毛 * * 指出：“解放战争的形势起了一个根本的变化，即人民解放军由战略防御转入战略反攻，国民党军队则由战略进攻转入战略防御。这一转变，是以解放军渡过黄河向南进攻，把战争推进到国民党统治区为标志的。”材料中的“标志性”事件是指

A．粉碎国民党军队重点进攻

B．刘邓大军挺进大别山

C．三大战役歼灭国民党主力

D．渡江战役取得胜利

桡神经损伤出现：（）

A.腕下垂

B.拇指不能作对掌、外展活动，拇指、示指不能过伸，大鱼际萎缩

C.呈猿手畸形

D.拇指不能内收，其余四指不能作内收和外展运动，第四、五手指关节不能屈曲

E.呈爪形手

氧熔剂方法切割紫铜、黄铜及青铜时，应先将被切割金属预热到（）℃