下列说法正确的是 A.向某溶液中滴加KSCN 溶液,溶液呈红色,证明存在Fe3+

题型:选择题

问题:

下列说法正确的是

A.向某溶液中滴加KSCN 溶液,溶液呈红色,证明存在Fe3+而没有Fe2+

B.铝箔在酒精灯火焰上加热熔化但不滴落,因为铝箔表面氧化铝熔点高于铝

C.向煤中加入适量石灰石,在煤燃烧时最终生成CaSO3,可减少SO2对大气的污染

D.为确证NaHCO3溶液中混有Na2CO3,取少量溶液,加入澄清石灰水,若有白色沉淀生成,则证明混有Na2CO3

考点:元素的性质生活中的元素(常量元素、微量元素)
题型:选择题

小明是一名初中生,小学时成绩优秀,而且小升初是以全县第一的成绩考入初中的。进入初中后,因学习不适应,成绩逐渐下降到二十几名,这给了小明很大的打击。从此,小明来学校时总把衣服的拉链拉得很高,将头藏进衣服单,不愿见人。

分析小明这种状况属于什么心理现象?造成这一问题的原因是什么?如何帮助小明摆脱这种困境?

题型:选择题

阅读理解。

    We've all met with something that slows us down, for example, the bump (颠簸) in the road, the

setback. You just have to keep in mind that a setback is only temporary and greater things lie ahead.

Therefore, keep moving forward, developing what you have, since you've already built a solid foundation

on which you can rely.

     It is easy just to quit, give up and ignore the hard work you have put into something. But we believe in

the "two steps forward, one step back" philosophy (哲学). So how can you react when something

doesn't turn out as you've expected it to be?

     First, be objective. Step back and look at the situation. Is your setback really that significant, or will it

just require a little extra effort? Then, plan your next move. You can ask for help. Don't be afraid o

r ashamed to do this. Frequently, people are more than willing to give you support and advice. You don't

have to be perfect; after all, nobody else is. Next, bounce back. Reevaluate the goals you have set for

yourself at the beginning and retool (改组) them as necessary. Goals should be realistic and specific, but

that doesn't mean they can't be flexible. Instead of looking at your project as a disaster or a failure, view

it with success. Concentrate on how great it will feel after it is finally done, after you have put your all into

it. Instead of focusing on a possible unsatisfactory performance one single time, take a moment to sit back and reward yourself for all that you have accomplished.

     Above all, don't live with regrets. Success is never easy. It remains up to you whether you will give

up, or fight through the tough battles to earn whatever you want. Keep reaching for your goals and you

will achieve them. One small setback is nothing if you really want something and are willing to work for it.

1. According to the passage, the philosophy " two steps forward, one step back" means

    that  ___ when meeting with a setback.

A. we are supposed to quit and ignore the hard work

B. we'd better think it over before making a decision

C. we should stop to think before taking further action

D. we are expected to look at things in an allround way

2.The underlined word "it" in Paragraph 3 refers to________.

A. a performance    

B. a success

C. a goal  

D. a project

3.When suffering a setback,the most important thing to do is________.

A. to keep moving forward to your goals

B. to depend on others' support and advice

C. to sit back and reward yourself for your success

4. What is the passage mainly about?

A. How to avoid the bumps.

B. How to deal with the setbacks.

C. Different attitudes to the setbacks.

D. Different suggestions on your goals.

题型:选择题

填入下面句子空缺处最为合适的选项是( )
信息高速公路的深远社会影响尤其明显地体现在人类文化变迁和新的文化产业的______。

A.兴起

B.崛起

C.开发

D.发掘

题型:选择题

K-T气化法特点?

题型:选择题

患者胸部叩诊浊鼓音见于 ( )

A.

B.

C.肺不张(或肺水肿)

D.肺气肿

E.气胸

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