焊条电弧焊立焊操作时，发现椭圆形熔池下部边缘由比较平直轮廓变成鼓肚变圆时，表示熔池温

阅读理解。

     Mr. Brown was going away for a week. Before he left, he said to his son, "If anyone asks for me, you

can tell him that your father has been out for doing something, and will be back in a week, then be sure to

ask him to sit down for a cup of tea."

     "OK, Dad," said his son. But he was afraid his son couldn't remember this, he wrote these words down

on a piece of paper and gave it to him. His son put it into his small pocket, took it out and looked at it every

now and then.

     Four days passed, but no one came to see his father. The boy thought that there was no man to come

and that the piece of paper was of no more use for him, so he burnt it that evening.

     The next afternoon, someone knocked at the door. The boy opened it. A man was standing at the door

and said, "Where is your father?" The boy put his hand into his pocket at once and looked for the piece of

paper. He could not find it. He suddenly remembered he had burnt it, so he shouted, "No more." The man

was very surprised. He asked, "No more? I met your father last week. When did it happen?" "Burnt

yesterday evening."

1. Mr. Brown told his son that _____. [ ]

A. he would be away from home for four days

B. he would be back in seven days

C. he would be back in a month

D. he liked a cup of tea

2. Mr. Brown wrote the words down on _____.[ ]

A. the wall

B. the door

C. a piece of paper

D. his son's pocket

3. A man came to visit the boy's father on _____. [ ]

A. the second day

B. the third day

C. the fourth day

D. the fifth day

4. The man was very surprised because _____. [ ]

A. he thought the child's father was dead

B. the child didn't ask him to sit down

C. the child gave him a cup of tea

D. he couldn't find that piece of paper

5. What was burnt? _____. [ ]

A. The piece of paper

B. Mr. Smith

C. The visitor

D. The boy

称肝为“罢极之本”，主要是由于肝有下列哪种功能（）

A.促进血行

B.调畅气机

C.贮藏血液

D.疏通水道

E.疏泄肾精

呕吐咖啡样液体最常见于（）

A.胆囊炎

B.急性胃炎

C.急性胰腺炎

D.消化性溃疡

E.食管静脉破裂出血

藁本的功效是

A．发汗解表，和中化湿
B．发表散寒，行气宽中
C．祛风散寒，温肺化饮
D．发表散寒，祛风胜湿
E．散风寒，通鼻窍

在2008年北京奥运会开闭幕式和建国60周年国庆庆典上大放异彩的浏阳产品是什么？