试题与答案

某探究小组设计了下列四种制备物质的实验方案,其中不能实现的是() A.Fe2O3

题型:选择题

题目:

某探究小组设计了下列四种制备物质的实验方案,其中不能实现的是(  )

A.Fe2O3 稀H2SO4Fe2(SO4)3溶液NaOH 溶液Fe(OH)3

B.CuO 稀 HCl CuCl2溶液FeCu

C.Fe点燃 Fe2O3稀H2SO4Fe2(SO4)3溶液

D.CaCO3稀HCl CO2NaOH溶液Na2CO3溶液

答案:

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题型:完形填空

语法填空(共10笑题;每小题1.5分,满分15分)

阅读下面短文,按照句子结构的语法性和上下文连贯的要求,在空格处填入一个适当的词或受用括号中词语的正确形式填空,并将答案填在答题卡标号为31~40的相应位置上。

A young man,while traveling through a desert,csme across a spring of clear water.____31____water was sweet.He filled his leather container so that he could bring some back to an elder ____32____ had been his teacher .After a four-day journey, the young man____33___.(present) the water to the old man. His teacher took a deep drink, smiled____34____(warm), and thanked his student very much for the sweet water.The young man went home____35_____a happy heart.

After the student left, the teacher let __36___student taste the water. He spit it out, __37___(say) it was awful. Apparently, it was no longer fresh because of the old leather container. He asked his teacher,” Sir, the water was awful. Why did you pretend to like ___38____?”

The teacher replied,” You tasted the water. I tasted the gift. The water was simply the container for an act of kindness and love. Nothing could be ___39___ (sweet).”

We understand this lesson best ____40___ we receive gifts of love from children. Whether it is a cheap pipe on a diamond necklace, the proper response is appreciation. We love the idea within the gift rather than the thing.

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