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提问人:网友qj_198127 发布时间:2022-01-07
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Design experiments to determine the pigments that are primarily responsible for photosynthesis. 设计实验找出哪些色素在光合作用中起主要作用。

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更多“Design experiments to determine the pigments that are primarily responsible for photosynthesis. 设计实验…”相关的问题
第1题
The author implies that scientists develop a healthy skepticism because they are aware tha
t ______.

A.mathematicians are better able to solve problems than scientists

B.changes in axiomatic propositions will inevitably undermine scientific arguments

C.well-defined situations are necessary for the design of reliable experiments

D.some factors in most situations must remain unknown

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第2题
The passage suggests that Mendel's experiments succeeded becauseA.Mendel discovered flaws

The passage suggests that Mendel's experiments succeeded because

A.Mendel discovered flaws in his research design and corrected them

B.Mendel had a thorough understanding of the concept of linked traits

C.the scientific community finally understood the connection between mathematical computations and heredity

D.the traits in peas happen to reappear in a distinct and predictable way

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第3题
听力原文:Dr. Allen Hersh designs smells for businesses. He says that it doesn't take a who

听力原文: Dr. Allen Hersh designs smells for businesses. He says that it doesn't take a whole lot of smell to affect you. (29) Store owners can lure you to the candy aisle, even if you don't realize you are smelling candy. This idea scares a lot of people. Groups that protect the rights of shoppers are upset.

They say the stores are using a kind of brainwashing which they call "smell-washing". "It's pretty dishonest," says Mark Silbergeld. He runs an organization that checks out products for consumers. The scientists hired to design the scents disagree. (30) "There's soft background music. There's special lighting. There're all sorts of bells being used," says Dr. Hersh, "why not smells?" "One reason why not," says Silbergeld, "is that some people are allergic to certain scents pumped into products or stores."

But there is a whole other side to this debate, "do the smells really work?" So far, there is little proof one way or the other. But Dr. Hersh has run some interesting experiments. In one of Hersh's experiments, 31 volunteers were led into a shoe store that smells slightly like flowers. Later, another group shopped in the same store, but with no flower odor. (31) Dr. Hersh found that 84% of the shoppers were more likely to buy the shoes in the flower-scented room, but Hersh found out something even stranger. "Whether the volunteers like the flower scent or not didn't matter," Hersh says, "Some reported that they hated the smell, but they still were more likely to buy the shoes in the scented room."

Questions:

Why are some people against the use of smells to attract customers?

What is Dr. Hersh's attitude to the use of smells for business?

What did Hersh's experiment show?

(30)

A.Customers may get addicted to the smell.

B.Customers may be misled by the smells.

C.It hides the defects of certain goods.

D.It gives rise to unfair competition.

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第4题
在Discussion Section中,需要回答的基本问题包括:

A、Do your results provide answers to your testable hypotheses? If so, how do you interpret your findings?

B、Do your findings agree with what others have shown? If not, do they suggest an alternative explanation or perhaps an unforeseen design flaw in your experiment (or theirs?)

C、Given your conclusions, what is our new understanding of the problem you investigated and outlined in the Introduction?

D、If warranted, what would be the next step in your study, e.g., what experiments would you do next?

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第5题
听力原文: What we call the fine arts are considered to be painting, sculpture, literature,
drama, music, dancing, and architecture.

Today, many curious experiments are being made in all the fine arts. But the traditional methods and products of the fine arts all have things in common. For one thing they have "design". Design can be with sounds, with stones, with words, with building materials, with lines, and paint. A work of fine art is designed. And within that design, the creator "rhythm", "balance", and "harmony".

Rhythm comes from the more or less regular repetition of similar sounds, colors, shapes, and movements. Balance is the arrangement of what the artist works with so that the result seems right to us. And harmony is putting things together that seem to belong together. These, of course, are only rough ideas of what a creator in the fine arts tries to do.

Which of the following is not the fine art?

(13)

A.Sculpture.

B.Literature.

C.Music.

D.Tennis.

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第6题
15) The outcome of these experiments is not always entirely , so don’t be too confident now.
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第7题
Experiments showed that ______.A.birds are likely to get lost if there aren't man-made sta

Experiments showed that ______.

A.birds are likely to get lost if there aren't man-made stars.

B.day-flying birds depend on the sun while night-flying birds depend on the stars

C.birds depend on the sun to guide them

D.birds depend on the stars to guide them

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第8题
In the author's opinion, why do more people in Britain oppose animal experiments?A.Because

In the author's opinion, why do more people in Britain oppose animal experiments?

A.Because they are kinder than those in the United States.

B.Because they don't know the benefits resulting from animal tests.

C.Because most of the medicines don't need animal experiments to work well.

D.Because some scientists use rare species for their medical experimentation.

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第9题
Let’s increase experiments with other forms of energy, and let’s not be afraid__1__co
sts. It is a matter of survival and there will be no time for experimenting when the oil__2__. Meanwhile, let's be thrifty and use oil only__3__necessary. The days of oil galore are over. Let's design engines which are more efficient. Let's use engines __4__small power wherever possible. Let's replace liquid fuel by solid fuel wherever possible. For power plants liquid fuel is not essential.__5__aeroplanes it is. And there is plenty of coal available.

1.();

A. for

B. with

C. of

D. to

2.();

A. runs off

B. runs up

C. runs down

D. runs out

3.();

A. than

B. when

C. while

D. where

4.();

A. in

B. with

C. at

D. by

5.();

A. For

B. To

C. With

D. Towards

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