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The color of food might affect just how ...

    The color of food might affect just how much you want to eat thembut what about the birds in your neighborhoodWould they care what color their food isTry this out for a science fair projector just to learn something new while making your local birds happy.

Begin this experiment with the question“What color of birdseed(鸟食),if anywill birds like the most?”, and then make a hypothesis (假设) based on your question. An example might be“Birds will eat more green birdseed than other colors of birdseed.”

You should get several bird feeders. Purchase birdseed that is very light in color. To color the birdseed, pour it into a bowl and then add food coloring that you can purchase from the store. Mix them up well with a spoon and continue to add coloring until all the seed is colored. You should sample at least a few colors and have one feeder with seed that has not been colored—this is called the control and it will give you something to compare your results to. Now just hang them up outside in the same locationand wait for your feathered friends to show up. This works best in an area where birds are used to feeding from a feeder—it can take birds over a week to find new feeders.

Observe your bird feeders whenever possibleand keep track of how much seed is in each bird feeder each day. A ruler is helpful for this. You might also want to take pictures of the feeders and keep track of what kind of birds visit each feeder. Over timeyou should be able to see if one color of seed gets eaten more than others.

Once your experiment is doneyou will be able to go back to your hypothesis and see if it is correct. Remember, it’s not bad if your hypothesis was wrong. The main thing is that you’ve learned something from your experimentand hopefully you had some fun doing it.

1.What’s the purpose of this experiment?

A.To see what color birds like most.

B.To make local birds happy.

C.To see if the color of food affects birds.

D.To find how local birds feed themselves.

2.What’s the second step for this experiment?

A.Observing bird feeders. B.Raising a question.

C.Collecting all the data. D.Making a hypothesis.

3.The underlined words“feathered friends”in Paragraph 3 refer to       .

A.feeders B.birds

C.neighbors D.locals

4.What is the most important about the bird feeders?

A.They are filled with some water. B.They are placed in secret places.

C.They are painted in different colors. D.They are all the same size and type.

 

1.C 2.D 3.B 4.D 【解析】 这是是一篇说明文。食物的颜色会影响人类的食欲,那鸟类是否也对食物的颜色有所选择呢?作者做了一个实验来证明自己的观点,并给出了实验的具体步骤及其关键点。 1.推理判断题。第二段中的Begin this experiment with the question “ What color of birdseed(鸟食),if any,will birds like the most?” 在开始这个实验时,先问个问题“什么颜色的鸟食,如果有的话,鸟类最喜欢?”可知,该实验的目的是查明鸟类是否会依据颜色选择食物。选项C为了了解食物的颜色是否会影响鸟,切题,故选C。 2.细节理解题。第二段中的then make a hypothesis (假设) based on your question. 然后根据你的问题做一个假设。所以实验的第二步是做假设。选项D做一个假设。切题,故选D。 3.词义猜测题。第三段的…wait for your feathered friends to show up.等着你的有羽毛的朋友露面。下文This works best in an area where birds are used to feeding from a feeder. 这在鸟类习惯用鸟槽喂养的区域效果最好。可知,等待的是鸟。选项B鸟,切题,故选B。 4.推理判断题。第三段中的You should get several bird feeders. ……You should sample at least a few colors and have one feeder with seed that has not been colored—this is called the control and it will give you something to compare your results to. 可知,你应该找几个鸟食槽。......你应该至少准备好几种颜色,并且有一个鸟食槽里的鸟食不染色,这称为控件参照,它使你能把得出的变化结果与此进行比较。因此推断实验是把装有颜色的鸟食在鸟食槽内的变化情况与不染色的鸟食在鸟食槽的情况做对比,要想比较就必须在鸟食槽相同的条件下才能得出哪种颜色的鸟食被吃的多,选项D鸟食槽的大小和类型一样,切题,故选D。
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These teens’ homework and what they study in the classroom are all totally up to them. Charles Tsai, a journalist, made a 15-minute film about the project that shows the wide variety of activities different students join.

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“I think the more choices we have in our school, the more students we will help develop into the kind of citizens that we need,”Principal (校长) Marianne Young explains in the film.

In the video, teens express their satisfaction with the program because it holds different kinds of learners, even those who don’t always succeed in a traditional study situation.

“I have difficulty in reading and writing. School has always been a big problem for me,” one student named Sergio explains in the video. “If it were not for this program, I don’t know if I’d be graduating - I don’t know where I’d be right now. I think this has really been my savior (救星) and got me through the last two years of high school.”

1.What is the Independent Project about?

A.Various activities for students. B.Student-centered curricula.

C.A self-designed school. D.Teacher-free classes.

2.How does the program work?

A.Teachers work out a curriculum for students.

B.Students research topics they put forward.

C.Teachers work together with students.

D.Students serve as teachers in turn.

3.What’s Marianne Young’s attitude towards the project?

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C.Uncertain. D.Optimistic.

4.What do we know about Sergio?

A.He finds it hard to graduate.

B.He has bitter memories of high school.

C.He feels grateful to the Independent Project.

D.He performs badly in the Independent Project.

 

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David Unaipon was born in South Australia, in 1872. As a young man, he loved to read and was interested in science and music. He thought a lot about new ways to fix engineering problems. Between the years 1909 and 1944, Unaipon made nine important inventions. He also made drawings for a helicopter design. He got the idea from the Australian boomerang (回飞镖) and the way it moved through the air. This happened in 1914, before we had helicopters.

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2.What can we learn about David Unaipon’s helicopter design?

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Dear Ms. Smith,

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With best wishes,

Li Hua

 

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