某无色溶液中,下列各组离子可以大量共存的是( ) A.H+SO32-CO32-S

题型:选择题

问题:

某无色溶液中,下列各组离子可以大量共存的是(  )

A.H+   SO32-   CO32-   SO42-

B.Cu2+   Cl-  NO3-   CO32-

C.Mg2+   H+   SO42-   Cl-

D.Mg2+   OH-  CO32-H+

考点:离子共存
题型:选择题

B

Snow can be very beautiful. When snow covers everything around you , the world looks like a “Winter Wonderland”. That is the name of a very popular song about winter. Richard Smith and Felix Bernard wrote the song in 1934.

But winter is not always such a beautiful and happy time. It is cold outside.The wind blows and makes it even colder. The days are shorter and darker. The sun rarely shines. The leaves on the trees are brown or have fallen to the ground. The flowers are mostly gone. It is not surprising that some people are sad in winter. And some people dream about being somewhere else where it is warm and pretty——like the state of California. The Mamas and the Papas recorded their famous song, “California Dreaming” in 1965.

During the 1960s, many other famous rock groups sang songs about winter. Here is a song by Simon and Garfunkel called “A Hazy Shade of Winter”. They sing about life and hope.

In 1968, the group Blood, Sweat and Tears recorded this gentle, sad song about winter. They sing about a lost love and forgotten memories in “Sometimes in Winter”.

Gordon Lightfoot wrote and recorded another sad and lovely song about winter in 1975.Sarah McLachlan recorded “Song for a Winter’s Night” for an album in 2006.She sings about reading a love letter and wishing the writer were with her.

Finally, on a lovely note, we leave you this sad song by Wayne.

40. Which of the following is TRUE according to the passage?

A. “Winter Wonderland” is a song written by two brothers.

B. Most people feel very sad in winter.

C. “California Dreaming” is the most famous song about winter.

D. Winter is not always a happy time.

41. What do we learn about the song “Sometimes in Winter” from the passage?

A. It was written for Sarah McLachlan .

B. Gordon Lightfoot made some changes to it.

C. It is a gentle and sad song about winter.

D. It first came out in the 1970s.

42. What can we infer from the passage?

A. It is usually warm in California in winter.

B. “Song for a Winter’s Night” is a very happy song.

C. Blood, Sweat and Tears are the names of three singers.

D. Simon and Garfunkel often felt sad.

43. Where is this passage most probably taken from?

A. Newspaper      B. TV news         C. Radio program   D. Magazine 

题型:选择题

甲、乙两只杯子的容积相同,甲杯中盛满蔗糖溶液,乙杯为空的。若将甲杯的蔗糖溶液倒出一半到乙杯中,再向乙杯中加满水,有关所得到的甲、乙两杯溶液叙述中正确的是

[ ]

A.两杯所含蔗糖的分子数相等   

B.两杯所含的总分子数相等

C.两杯糖水的溶质质量分数相等

D.两杯中水的分子数相等

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运输工具各种栏目应填( )。

A.03E flag

B.VILLE DE SAGITFA

C.VILLE DE SAGITTA/03E

D.03E

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请结合“给定资料3~7”,谈谈您认为应该从哪几个方面发展和建设我国的廉租房要求:分条作答,简明扼要,不超过200字。

题型:选择题

软件工具通常由工具、工具接口和()三部分构成。

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