问题 阅读理解

When asked to point out one or two things that are most important to themselves, many put friends ahead of homes, jobs, clothes and cars.

A true friendship carries a long history of experience that determines who we are and keeps us connected. It is a treasure we should prove it. Unfortunately, the better friends you are, the more probably you’ll have disagreements. And the result can be what you don’t want an end to the relationship.

The good news is that most troubled friendships can be mended. First, don’t let your pride get in your way. Most of us can forgive each other when differences are brought out in the open. Second, apologize when you’re wrong ― even if you’ve been wronged. Over the course of friendship, even the best people make mistakes. Sometimes, it may be best if the wronged person takes wrong. Third, see things from your friend’s point of view. And finally, accept that friendships changes as our needs and lifestyles change. Making friends can sometimes seem easy. The hard part is keeping the connections strong during the nature ups and downs that have an effect on all relationships. My suggestion: Consider friendship an honor and a gift, and worth the effort to treasure and nurture(培养).

小题1:The “wronged person” underlined in the text refers to a person _______.

A.who has been mistaken for another

B.who has been blamed unfairly

C.who has treated friends badly

D.who has admitted his mistakes小题2:According to the text a friendship can last long only if________.

A.we treat our disagreements wisely

B.we know our friends mistakes

C.we have much in common

D.we have known one another for long小题3:What should we do if we follow the author’s second suggestion?

A.Stick to our own points of view.

B.Avoid making mistakes.

C.Make an apology first.

D.change our lifestyles.

答案

【小题 1】B

【小题 2】A

【小题 3】C

【小题 1】词义理解推断题,由文中第三段语句理解可知

【小题 2】细节理解题,由文中语句“Consider friendship an honor and a gift, and worth the effort to treasure and nurture(培养).”理解可知

【小题 3】细节理解题,由文中语句“Second, apologize when you’re wrong ― even if you’ve been wronged.”理解可知

单项选择题
实验题

(7分)“过氧化钠(Na2O2)”是一种淡黄色固体,能与水或二氧化碳反应放出氧气。实验室有一瓶放置了较长时间的过氧化钠粉末,已知发生了部分变质,同学们取3.00g变质粉末决定探究其中的成分及其质量。

【提出问题】变质的过氧化钠粉末中有哪些成分,它们的质量是多少?

【查阅资料】

①2Na2O2+2H2O═4NaOH+O2↑  2Na2O2+2CO2═2Na2CO3+O2

②碳酸钠溶液显碱性,氯化钙溶液显中性。

③Na2CO3+ CaCl2═CaCO3↓+2 NaCl

【猜想与假设】

(1)粉末成分是Na2O2和NaOH的混合物

(2)粉末成分是________________________的混合物

(3)粉末成分是Na2O2、NaOH 和Na2CO3的混合物

……

【设计实施方案】

实验步骤实验现象
①取3.00g变质粉末于一支大试管内,加入适量的水,共收集到0.32g气体,然后用带火星木条检验生成的气体。 

固体完全溶解,______________________

②继续向上述试管中加入足量的石灰水,充分反应。 

__________________________________

③将②中物质过滤,得到滤渣,将其洗涤、干燥并称量,得固体1.00g。 
【解释与结论】同学们经过认真分析,得出了以下结论。

粉末中含有的成分及质量

 Na2O2NaOHNa2CO3
成分(填“有”或“没有”)   
质量(g)   
【反思与评价】

(1)实验室在保存过氧化钠时应注意_______________。

(2)有同学提出把第②步实验中足量的石灰水改为足量氯化钙溶液,至沉淀不再生成时过滤,向滤液中滴加无色酚酞试液,若液体变红,则证明原粉末中有NaOH。你认为该方案是否合理并说明理由____________________________。