问题 选择题

高铁酸钾(K2FeO4)中铁元素的化合价为(  )

A.+2

B.+6

C.+3

D.+4

答案

根据在化合物中正负化合价代数和为零,钾元素显+1,氧元素显-2,设铁元素的化合价为x,可知高铁酸钾(K2FeO4)中铁元素的化合价为:(+1)×2+x+(-2)×4=0,则x=+6.

故选B.

单项选择题
阅读理解

阅读文章,回答问题。

        Do you like chocolate? Maybe most people do. A box of it can be a great gift. Buy one for a friend and give

it as a surprise. See how happy that person gets.

        Say you just got a box of chocolate. Which piece do you pick first? A man has studied people's choices.

He says they tell something about the person. Did you choose a round piece? You are a person who likes the

party. Did you choose an oval (椭圆形的) shape? (1)You are a person who likes to make things. Picking a

square shape shows something else. The person is honest and truthful. You can depend on (依靠) him or her.

         (2) What kind of ______ do you _______? Maybe you like milk chocolate. This shows you have warm

feelings about the past. Dark chocolate means something else. A person who chooses it looks toward the future.

What about white chocolate? Would you choose it? If so, you may find it hard to make up your mind. Some

people like chocolate with nuts (果仁). These are people who like to help others. Different choices may show

different characters (性格). Do you believe these ideas? Can candy tell all these things? It doesn't really matter.

There is one sure thing about eaters of chocolate. They eat it because they like it.

1.回答下面问题:

     What may you like to think of if you enjoy eating milk chocolate?(不超过5个单词)

     __________________________________________________________________

     What kind of chocolate may a helpful man choose according to this passage?(不超过5个单词)

     __________________________________________________________________

2.将(1)句译成中文:__________________________________________________

3.在(2)句的空白处填入适当的词使句意完整、上下文通顺:________,________

4.找出文中与下列句子意思相近的句子:You enjoy singing, dancing and drinking.

     ____________________________________________________________________

5. 找出文中最能表达该短文主题的句子: