说出一个辨别真假碘盐的方法。

阅读理解

Rick: Hi, Nancy! Nice to meet you! Where did you go on vacation?

Nancy: Nice to meet you., too. I went to Beijing. 

Rick: Oh,really? Did you go to the Great Wall?

Nancy: Yes. I did. It was very great and fantastic. I like it .

Rick: And did you go to the Palace Museum?

Nancy: Of course I did. It has many fantastic halls and treasure in the museum. And

            we visited many other places, such as Tian'an Men Square, Chairman Mao's 

            Memorial Hall and so on.

Rick: You're so lucky. How was your vacation, Nancy?

Nancy: It was pretty good.

Rick: And how was the weather,was it cloudy or sunny?

Nancy: It was dry and windy?

Rick: How were the people?Did they welcome you?

Nancy: They were very friendly to the visitors. They're good !

根据对话判断正(T)误(F).

( )1. Nancy didn't go to the Great Wall, it's too dangerous.

( )2. Nancy and Rick are talking about the vacation.

( )3. Nancy visited the Imperial Palace, but she didn't visit the Tian'an Men Square.  

( )4. It was dry and windy in Beijing.

( )5. People in Beijing were friendly to the visitors.

关系复杂的长句，会使语意晦涩难懂。读下面一句译文，完成（1）（2）两题。（6分）

也许因为俄罗斯的发展前景不明朗，美国不准备激化同中国的关系，对于北京就华盛顿对其施加压力所采取的坚定立场作惊人的让步。

（1）根据文意判断，谁对谁作出让步？（2分）

（2）把画线的句子改写成三个连贯的短句，要求层次清楚，文意明白，不得改变原意。（4分）

正常足月新生儿出生___________就可以母亲喂奶，每次约___________。

（）首先对行为承诺进行了研究，并进一步指出了组织行为承诺的四条行为标准。

A.夏兰希克

B.梅耶

C.艾伦

D.贝克尔

转炉出钢为什么要挡渣？