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What can we learn from the passage?A.People, regardless of their age, are crazy about vide

What can we learn from the passage?

A.People, regardless of their age, are crazy about video games.

B.Those over 15 can use the machines during the day in most countries.

C.Schoolchildren in uniforms are not allowed into amusement centers in many countries.

D.Many adults and children play video games at home.

提问人:网友cailim 发布时间:2022-01-07
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更多“What can we learn from the pas…”相关的问题
第1题
Repetition of initial consonant sound in closely associated words is called ___.

A、alliteration

B、assonance

C、rhyme

D、rhythem

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第2题
What should be involved in the introductory part of a comparison essay?

A、The frame of reference.

B、The grounds for comparison.

C、The thesis

D、All above

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第3题
The fraction of a sample possessing a certain trait is called a:

A、population.

B、mean.

C、confidence interval.

D、proportion.

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第4题
What are the three ways of in-text citation, mentioned in the lecture?

A、Quoting

B、Hedging

C、Paraphrasing

D、Summarizing

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第5题
What is the function(s) of pause in a flow of speech?

A、Relaxing

B、Emphasizing

C、Waiting for applause

D、Avoiding ambiguity

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第6题
Cells have several ways of ensuring that their daughters remember what kind of cells they should be. How do differentiated cells maintain their identity?
A.One of the simplest and most important is through a positive feedback loop, where a master transcription regulator activates transcription of its own gene,in addition to that of other cell-typespecific genes. Each time a cell divides, the regulator is distributed to both daughter cells, where it continues to stimulate the positive feedback loop.?The continued stimulation ensures that the regulator will continue to be produced in subsequent cell generations.?Positive feedback is crucial for establishing the “self-sustaining” circuits of gene expression that allow a cell to commit to a particular fate—and then to transmit that decision to its progeny.

B.Although positive feedback loops are probably the most prevalent way of ensuring that daughter cells remember what kind of cells they are meant to be,there are other ways of reinforcing cell identity. One involves the methylation of DNA.In vertebrate cells, DNA methylation occurs on certain cytosine bases. This covalent modification generally turns off the affected genes by attracting proteins that bind to methylated cytosines and block gene transcription. DNA methylation patterns are passed on to progeny cells by the action of an enzyme that copies the methylation pattern on the parent DNA strand to the daughter DNA strand as it is synthesizeD

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E.Enzymes responsible for these modifications may bind to the parental histones and confer the same modifications to the new histones nearby. It has been proposed that this cycle of modification helps reestablish. the pattern of chromatin structure found in the parent chromosome

D.Because all of these cell-memory mechanisms transmit patterns of gene expression from parent to daughter cell without altering the actual nucleotide sequence of the DNA,they are considered to be forms of epigenetic inheritanc

E.These mechanisms, which work together, play an important part in maintaining patterns of gene expression, allowing transient signals from the environment to be remembered by our cells—a fact that has important implications for understanding how cells operate and how they malfunction in diseas

E.

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第7题
The sense of acceptance,curiosity and honor are among the intrinsic motivation.
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第8题
【其它】of the consequenses, but in the process he has succeeded in laying wasteful vast expanses of forests and croplands. If our 2.__________
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第9题
In the case of the far-left government,what will happen to the power of the government ? (在极左政府的情况下,政府的权力会发生什么变化? )

A、The power of government becomes larger(政府的权力会变大)

B、The power of government becomes weaker(政府的权力会变弱)

C、No change at all(不变)

D、In different situations the changes are different. (在不同的情况下,变化有所不同)

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