London: It’s well known that Charles Dar

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问题:

London: It’s well known that Charles Darwin’s famous theory of evolution annoyed many people because it was against the Biblical view of creation. But few know that it also created problems for Darwin at home with his deeply religious wife, Emma.

“Darwin held back the publication of On the Origin of Species to avoid offending (触怒) his wife,” says Ruth Padel, the naturalist’s great – great – granddaughter. “Emma told him that he seemed to be putting God further and further off”, Padel says in her north London home. “But they talked it through, and Emma once said, ‘Don’t change any of your ideas for fear of hurting me.’”

As the world celebrates the 200th birthday of the man who changed scientific thought forever and the 150th anniversary of his book today, even his opponents admitted he was a giant figure.

Though opposition to his theory continues, it is the elegant explanation of how species evolutes through natural selection that makes his 200th birthday such a major event.

More than 300 celebrations have been planned in Britain alone, where Darwin's face graces (使增光)the 10-pound bill along with that of Queen Elizabeth II.

Shrewsbury, the central England town where Darwin was born and raised, is holding a month-long festival for its most famous son. Down House, his former home near London, will hold a permanent exhibition recreating some of his most famous experiments.

Many more events have been planned all over the world.

What would he be doing if he were alive today? Padel thinks he would properly be studying DNA and the immune system.

小题1:The main purpose of the author is          .

A.to say something about Darwin and his wife

B.to introduce Charles Darwin and his theory of evolution

C.to sing high praise for the book On the Origin of Species

D.to report some celebrations of Darwin’s 200th birthday and the 150th anniversary of his books小题2:Which of the statements is NOT true based on the passage?

A.Everyone agrees with Darwin now.

B.Darwin was brought up in Shrewsbury.

C.Emma was not really fond of his theory.

D.Darwin was very interested in living things.小题3:The underlined phrase “held back” in the second paragraph probably means        .

A.prevented from

B.kept a secret

C.cared about

D.put off小题4:It can be inferred that the passage is most probably          .

A.a scientific report

B.a news report

C.an English composition

D.a text

考点:新闻报道类阅读
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已知点P1(2,3),P2(-4,5)和A(-1,2),求过点A且与点P1,P2距离相等的直线方程.

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A.在胆总管的远端扩张而成的囊性憩室

B.胆总管呈瘤状扩张

C.在胆总管远端十二指肠壁内的一个囊性憩室

D.以上各项均是

题型:阅读理解

常用作尿糖、尿蛋白检查的防腐剂是()

A.浓盐酸

B.冰乙酸

C.甲苯

D.甲醛

E.二甲苯

题型:阅读理解

(12分)Na2CO3俗称纯碱、苏打,NaHCO3俗称小苏打,两者在日常生活和工业生产中都有着广泛的应用。某化学兴趣小组设计了如下实验来探究两者的某些性质。请你根据所学知识帮他们完成有关的设计和实验。

(1)甲同学测定两者的酸碱性:各取一定量的固体溶于水,配成相同浓度的溶液,测定其pH值,测定结果为Na2CO3、NaHCO3的pH分别为a和b(a、b均大于7)。

Ⅰ.测定溶液的pH值所用的主要仪器有:pH试纸、表面皿、         和标准比色卡。

Ⅱ.有关①100mL0.1 mol·L-1NaHCO3、②100mL0.1 mol·L-1Na2CO3两种溶液的叙述不正确的是(   )

A.溶液中水电离出的OH-个数:②>①

B.溶液中阴离子的物质的量浓度之和:②>①

C.①溶液中:c(CO32-)>c(H­2CO3)

D.②溶液中:c(HCO3-)>c(H­2CO3)(2)乙同学取一定量的碳酸钠溶液于试管中,滴加2~3滴酚酞试液,发现溶液变红,继续滴加BaCl2溶液,预计可观察到                             ,请你结合必要的离子方程式,应用平衡的观点解释有关现象的产生:                                      

(3)常温下,现有pH均为11的标签模糊的NaOH和Na2CO3溶液,则NaOH溶液中由水电离出来的OH-浓度为Na2CO3溶液中水电离出来OH-浓度的      倍。丙同学设计如下实验予以区别:各取1mL两种溶液加水稀释至1L,分别测定其pH。请问丙同学是如何判断哪瓶溶液为Na2CO3溶液?             ;丁同学各取1mL两种溶液,分别滴加少量AlCl3溶液观察有无沉淀或气体进行鉴别,则溶液滴加后同时产生沉淀和气体的反应离子方程式为                                       

(4)已知:Ksp(CaCO3)=4.96×10-9,不考虑其它因素影响,现将0.400 mol·L1的Na2CO3溶液和0.200 mol·L1的CaCl2溶液等体积混合,则混合后溶液中Ca2+浓度为    mol·L1

题型:阅读理解

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