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问题 问答题 简答题

高炉内FeO是通过哪几种方式被还原？

答案

参考答案：

①被气体H2或CO间接还原；

②借助碳素溶解损失反应和水煤气反应被C直接还原；

③含FeO的液态炉渣与焦炭接触时或与铁水中饱和碳发生反应。

阅读理解

阅读理解。

     I am Cathy Brown.   I am from America.   I am working for the  Sunshine Travel  Agency(旅行社) in Changsha now.     Last week I took a group of French holiday-makers for a week’s trip to Taiwan.    We traveled all around the island(岛).   It is very beautiful.   There are a lot of places of interest.   My favorite place is the Sun and Moon Lake. You may ask why people call it so.   If you fly high up over the lake and look down from your plane,    you will find the answer yourself.   In the middle of this lake, there is a small island. People call it the Pearl Island(珍珠岛) because it looks like a pearl.On one side of the Pearl Island, the lake looks like a sun, and on the other side, it looks like a moon. That is why people call it the Sun and Moon Lake.There are many mountains around the Sun and Moon Lake.   One of the most famous ones is the Ali Mountain. We stayed there for three days. We also had a dance party with Gaoshan people.   On our first day there, we watched the sun going down slowly in the west.  On our last day, we got up early   and saw a very beautiful sunrise(日出).Taiwan is a wonderful place to visit.

根据短文内容，判断下列句子正（T）误（F）。  

(    )1.Cathy went to Taiwan with some Americans last week.

(    )2.Cathy thinks Taiwan is a beautiful place with lots of places of interest.

(    )3.The Sun and Moon Lake gets its name because it looks like the sun during the day and looks like

the moon at night.

(    )4.Ali Mountain is near the Sun and Moon Lake.

(    )5.Cathy watched the sun going up and going down on different days.
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单项选择题

与胃癌无关的肿瘤标志物为（）

A.FSA

B.CEA

C.CA19-9

D.CA50

E.PSA
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