把50克盐放入200克水中,这时盐和水的重量比是1:4.______.

题型:解答题

问题:

把50克盐放入200克水中,这时盐和水的重量比是1:4.______.

考点:比的应用
题型:解答题

踢毽子。

男孩踢18个,女孩踢的和他差不多,女孩踢[ ]

A.36个

B.17个

C.7个

题型:解答题

社会服务机构开展活动过程中,机构董事会、高层管理者必须关心的问题是( )。

A.如何设置合理的机构

B.如何获得活动经费

C.如何健全内部控制制度

D.如何培养专业的工作人员

题型:解答题

I will never forget the lesson about my window. Four years ago, I moved to a house in a large town. One of my new neighbors’ house was only a few feet away from mine. There lived a woman. Through one of my windows, I could see her reading by her window every afternoon.

Several months later, I found I couldn’t see the woman clearly. I thought her window was too dirty. I said to myself, “Why doesn’t she clean her window? It looks terrible!”

One afternoon, I decided to clean my house including the window. I felt tired after three hours of hard work. So I sat down by the window for a rest. What a surprise! I could see the woman reading there clearly again! By that time, I realized that my own window was too dirty, not hers! I really felt ashamed for myself. I had been watching her through my dirty window in the past days!

The experience is very important for me. So I try to clean the window of my heart before judging others.

小题1:How long has the writer lived in the house according to the passage?

A.One years

B.Two years.

C.Three years.

D.Four years.小题2:What did the woman do every afternoon?

A.Read by her window.

B.played tennis on the grass.

C.Danced in her house.

D.sang in front of the house.小题3:The writer couldn’t see the woman clearly because ______________.

A.the writer’s window was dirty

B.the woman’s house was too far

C.the woman didn’t open her window

D.there was something wrong with his eyes.小题4:The underlined word “ashamed” means _________________.

A.高兴的

B.放松的

C.羞愧的

D.自豪的小题5: According to the passage, the writer has learnt how to __________________.

A.clean the house

B.judge others

C.help neighbors

D.learn English

题型:解答题

人不惑之年是指50岁。()

题型:解答题

下图甲是利用人工湿地净化生活污水(主要含有机物)的原理简图。科研人员为有效控制该湿地生态系统中的某种害虫,引入了该害虫的天敌,并用一段时间的调查数据构建了图乙和图丙所示的模型(图乙中箭头方向代表曲线变化趋势)。请据图回答:

输入该人工湿地的能量来源有()。

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