Step 1 Review 第一步 复习1. T: Boys and girls. Let’s have words competition as usual. First required answers. Each student gets two words. I’ll give you Chinese meanings. You say them in English. Are you ready? Row 1, please. T: Good! Let’s go on with our quick responses. If you know the word, stand up quickly and answer. OK. Begin! T: Great! You are clever. Now let’s read them together. (通过对单词的必答, 抢答和齐读的过程, 让学生融入竞赛活动, 调动积极性, 活跃课堂气氛.) 查看更多

 

题目列表(包括答案和解析)

(10分)植物具有向重力生长的特性,下列是研究根向重力生长机理的两个实验。
实验一:将空白琼脂和含EDTA的琼脂做成帽状,分别套在甲、乙两组玉米胚根的根冠外(示意图如下)。提示:EDTA的作用是去除与其临接部位的 Ca2+

将胚根水平放置培养一定时间后,观察到甲组胚根向重力(下)生长,乙组胚根水平生长。根据上述实验结果,得出实验结论:                               
  实验二:水平放置的胚根弯曲向下生长,与根冠近地侧的Ca2+浓度明显高于远地侧有关。研究表明,根总是朝着Ca 2+浓度高的方向弯曲生长。为验证这一结论,有人设计了下列实验方案。请根据提供的实验材料和用具,写出第二步及以后的实验步骤和实验结果,并回答问题。
(1)实验材料和用具:胚根等长的萌发玉米种子,空白琼脂帽,含EDTA的琼脂帽,上面部分含Ca2+的琼脂帽(水平方向),培养皿等。
(2)实验步骤:
  第一步:取若干个培养皿,在每个培养皿中放置适量的萌发玉米种子,按实验一中乙组的方法处理胚根一定时间后,移去根冠外的琼脂帽。然后将培养皿平均分成两组,编号为 A组、B 组。 
  第二步:                                                            
  第三步:                                                            
(3)实验结果:                                                         
(4)科学家进一步证实,根冠中生长素的分布受Ca2+浓度影响,当胚根水平放置时,重力诱导Ca2+向根冠下侧移动,导致近地侧的生长素浓度比远地侧高。请分析胚根的生长素分布与向重力生长的关系:                                  

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阅读理解

  Overcoming shyness is not impossible.Let's discuss the steps to bring you out of shyness.

  Step 1

  Overcoming shyness is mainly a case of mind over matter.If you're afraid to do it, then do it again.The more you come to talk with people, the easier it will become.You may also find that it's not as difficult as you thought anyway.Just talk to people a little more every day.

  Step 2

  It sometimes helps to try to imagine(想象)yourself as another person.Think about it, do you get shy when someone else walks up to talk to another? Of course you don't.Think of yourself just as another somebody else and it'll make it a little easier.

  Step 3

  Dress up.The better you look, the more confident you'll feel.Feeling good about your appearance can greatly reduce shyness.

  Step 4

  If you're up to stage, try to imagine that you're somewhere else.Maybe in the comforts of your own living room.Tell yourself that the people in the audience are only people.

(1)

The first step mainly tells us ________.

[  ]

A.

we should talk to people as much as possible

B.

it's difficult to get over shyness

C.

we'll be shy when talking to more people

D.

we are shy because we don't think carefully

(2)

What does the underlined word "reduce" mean in this passage?

[  ]

A.

喜欢

B.

减少

C.

增大

D.

防治

(3)

The fourth step tells us ________.

[  ]

A.

it's easy to speak in our living room

B.

it's easy to speak to only people

C.

what to think of when speaking on stage

D.

when you can speak on stage

(4)

What's the best title for this passage?

[  ]

A.

How to Get on Well with Others

B.

How to Get over Shyness

C.

How to Act on Stage

D.

How to Make Friends with Others

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阅读理解

  When you’re curious(好奇)about something, and want to know more about it, you can use the way of asking questions.Asking questions is the first step to make discoveries and find interesting answers.The steps below can guide you during the research(研究).

  Step 1  On a note card or piece of paper, write down the subject that you are interested in.Just get the main idea down.For example, you might write:Discover more about dinosaurs.

  Step 2  Next, stop and think for a moment about what you already know about your subject.List what you already know like the sentences below:

  (1)Dinosaurs lived long before human beings appeared.

  (2)Dinosaurs lived on the earth for more than 150 million years.

  (3)Some dinosaurs fed on plants, some on meat.

  Step 3  What can you do with what you want to learn? By asking questions.On your paper, start writing down questions about the dinosaurs as you think of them:

  (1)What’s the best weather for dinosaurs to live in?

  (2)How many kinds of dinosaurs are there?

  (3)Have dinosaurs really disappeared?

  Step 4  Armed with your list of questions, you can now go to the nearest library or computer to begin your research.As you learn more about your subject, you’ll probably discover some new questions.For example, you might discover that dinosaurs disappeared about 65 million years ago.Why? What happened? Asking new questions can help you research your subject more widely.

  The next time you find something interesting to research, take time to organize(组织)your thinking by asking good questions.And remember-learning more always brings more questions.

(1)

When you do some research, you should take the following steps:________.

①list what you want to know  ②choose a research subject

③list what you already know  ④discover new problems

[  ]

A.

④③①②

B.

①④③②

C.

②③①④

D.

③②④①

(2)

From the passage, we know ________.

[  ]

A.

dinosaurs appeared after human beings

B.

not all the dinosaurs fed on meat

C.

dinosaurs lived on the earth for 65 million years

D.

dinosaurs liked warm seasons

(3)

What does “Armed with your list of questions” mean?

[  ]

A.

Putting your list of questions under your arm

B.

Discussing your questions with your classmates

C.

Writing down your list of questions

D.

Taking your list of questions with you

(4)

According to the passage, which one is true?________.

[  ]

A.

You can find all the answers online

B.

Learn more, and you’ll have no questions

C.

Asking questions is the only way for research

D.

During the research, you may keep finding new questions

(5)

The best title for this passage is “________”.

[  ]

A.

Discovering Dinosaurs

B.

Asking Good Questions

C.

Finding Subjects

D.

Learning Steps

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阅读理解

  Overcoming(克服)shyness is not impossible.The following steps may be helpful.

  Step 1

  Overcoming shyness is mainly a case of mind over matter.If you’re afraid to do it, you will get much shyer when doing it.The more you came to talk with people, the easier it will become.You may also find that it’s not as difficult as you thought anyway.Just talk to people a little more every day.

  Step 2

  It sometimes helps to try to imagine you as another person.Think about this:Do you get shy when someone else walks up to talk to another? Of course you don’t.Think of yourself as just another somebody else and it’ll make it a little easier.

  Step 3

  Dress to impress.The better you look, the more confident you’ll feel.Feeling good about your appearance can greatly reduce shyness.

  Step 4

  If you’re up on stage try to imagine that you’re somewhere else.Maybe in your own comfortable living room.Tell yourself that the people in the audience are really no big deal.They’re ONLY people.

(1)

The first step mainly tells us _________.

[  ]

A.

we should talk to people as much as possible

B.

it’s difficult to get over shyness

C.

we’ll be shy when talking to more people

D.

we are shy because we don’t think carefully

(2)

The second step tells us it’s _________ to think of yourself as another person.

[  ]

A.

unnecessary

B.

interesting

C.

useful

D.

difficult

(3)

What does the underlined word “reduce” mean in this passage?

[  ]

A.

喜欢

B.

减少

C.

增大

D.

防治

(4)

We can learn from the fourth step that _________.

[  ]

A.

it’s easy to speak in our living-room

B.

it’s easy to speak to only people

C.

what to think of when speaking on stage

D.

when you can speak on stage

(5)

What’s the best title of this passage?

[  ]

A.

How to get over shyness

B.

How to speak in public

C.

Don’t look on you as yourself

D.

How to feel good about yourself

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阅读下面文章,完成小题。(13分)
用善良做底色
松 韵
天气冷得出奇,寒风咆哮着卷起雪花,升腾起呛人的白烟。
温暖的红砖房里,母亲在厨房里忙碌着,柴火在灶坑里噼啪作响,锅上冒着润白的蒸气。我和弟弟早就饿了,正眼巴巴地等待着第一锅酸菜肉蒸饺出笼。
这时,有人叫门。父亲出去片刻,带回一个衣着单薄的外乡人来。看上去是个20多岁的农民,但是很年轻,嘴唇都发青了,显然在风雪中冻了很久。
“这丝棉很好的,你看看。”他说着,卸下肩上的旧麻袋,就要往外掏丝棉。
“别拿了,我不买丝棉。”父亲止住了他,“外面太冷,请你进屋暖和暖和!”“哦,不买?不买啊?这丝棉好,真的很好。”他有些失望,坐在暖和的火墙旁,一时却也并不想挪动。
这时,母亲端上了两大盘热腾腾的酸菜肉蒸饺。“你一定饿了,吃几个饺子挡挡寒吧!”母亲看着仍有些哆嗦的他,把筷子递过去。  
那人的确是饿了,推辞了一下,便接过筷子狼吞虎咽起来。当他意识到我们一家人还没吃饭时,两盘蒸饺只剩下了小半盘。他尴尬地抬起来,窘迫不安地嗫嚅道:“这……我……我……你们,你们还没吃吧?”
母亲笑道:“还有呢,你要吃饱了啊!”
蒸饺的确还有,可那一笼是纯素馅儿的,一丁点儿肉都没放。
弟弟捏了捏我的衣角,嘟起嘴来。
一盘半的蒸饺,对他来说可能也就六分饱,但无论如何他也不肯再吃了。
接下来的聊天中,我们知道他是安徽的农民,跟父亲弟弟一起到北方贩丝棉,没想到折了本,近年关了,打算把剩下的丝棉低价处理了,好歹挣回返乡的路费。  “我兄弟的脚冻坏了,他跟我父亲在车站蹲着呢。今儿天太冷,没让他们出来,我寻思把最后一包丝棉卖了,今晚就跟他们坐火车回去。”他说。
母亲听了,感叹道:“唉,你们做点小生意,也挺不容易啊!”
父亲跟母亲轻声说了点什么,母亲便去仓房找了三双半新的棉鞋,还有半面袋的冻豆包回来,递给这个年轻人说:“我们也不是有钱人家,要不然,就把你这丝棉买下了。这双棉鞋你换上,另两双拿去给你父亲和弟弟穿,北方不比南方,脚冻伤了可了不得!冻豆包我们今年蒸得多,你带几个让你的父亲和弟弟尝尝吧!”
年轻人站了起来,拘谨地搓着手,一遍遍地说:“这可咋好呢?这可咋好呢?我这是遇上好人家了!”  
我们把他送出门时,年轻人一眼瞥见院子里一堆锯好的圆木。他突然放下肩上的包,三步两步抢过去,“我干点儿活再走!”说着便抡起大斧,劈起柴来。母亲正要劝阻,父亲说: “让他干吧!”
寒风中,雪花飘飞,年轻人已经走了,我家院子里,整整齐齐地码着一垛劈得粗细均匀的柴火。
弟弟吃了剩下的半盘有肉的蒸饺,玩去了。我跟父母吃着第二笼纯素馅儿的蒸饺,觉得温暖而香甜。
我一直认为,在这个世界上,最赏心悦目的,是纤尘未染的青山绿水;最温暖人心的,是人与人之间纯洁真挚的感情。 暮年回首时,最有价值的财富,应是一颗恬淡宁静的心,和一份丰富无悔的回忆。而所有这一切的拥有,都需要用一颗善良单纯的心做底色。
【小题1】文章开头第一段的环境描写有何作用?(3分)
【小题2】“我”和父母吃着纯素馅蒸饺时,为什么会觉得“温暖而香甜”?(3分)
【小题3】年轻人在作出为“我”家劈柴的决定时,心理活动是怎样的?请联系上下文,
用文字写出来。(2分)
【小题4】年轻人在为“我”家劈柴时,母亲要阻止,而父亲却说“让他干吧”, 父亲这样做
的原因是什么呢?(2分)
【小题5】读下面的材料,然后结合本文,说说你的感受。(3分)
联合国秘书长安南卸任后,在得克萨斯州的一个庄园里举行了一场慈善晚宴,旨在为非洲贫困儿童募捐,应邀参加晚宴的都是富商和社会名流。当天慈善晚宴的主角不是倡议者的安南,不是捐出300万美元的巴菲特,而是仅仅捐出30美元零25美分的小露西。她说了这样一句话:“慈善的不是钱,是心。”让全场的人感动不已。

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