Twin Studies

What is the main topic of the article?

• Why identical twins have different genes

• How the environment affects our genes

• The effect of genes on our personalities

Answer explanation

The article primarily discusses how genes influence our personalities, making 'The effect of genes on our personalities' the correct choice. The other options focus on different aspects of genetics and environment.

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In paragraph 1, the word 'this' refers to ____.

• a widely held theory

• recent research on twins

• an idea about environments

Answer explanation

In paragraph 1, 'this' refers to 'a widely held theory' as it summarizes the main concept being discussed, distinguishing it from specific research or ideas about environments.

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What is NOT true about the twins described in paragraph 2?

• They grew up in the same family.

• They had similar interests.

• Both were married.

Answer explanation

The statement 'They grew up in the same family' is NOT true because the twins were raised separately, which distinguishes their experiences despite any similarities in interests or marital status.

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In paragraph 4, the word 'amazing' probably means '____.'

• disappointing

• surprising

• confusing

Answer explanation

In paragraph 4, 'amazing' suggests something that is unexpected or remarkable, aligning with the meaning of 'surprising.' The other options, 'disappointing' and 'confusing,' do not fit the positive connotation of 'amazing.'

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In paragraph 4, why does the writer say, 'the list goes on and on'?

• To emphasize that DNA affects many parts of our personalities

• To explain that many people disagree with Dr. Bouchard

• To suggest that scientists need to do more research

Answer explanation

The phrase 'the list goes on and on' emphasizes that DNA influences various aspects of our personalities, highlighting its significant role in shaping who we are.

According to the article, what is true about intelligence?

• The environment is at least as important as a person's genes.

• Identical twins often show a 30 percent difference in intelligence.

• It is difficult to know how the environment and genes work together.

Answer explanation

The article emphasizes that the environment plays a crucial role in shaping intelligence, suggesting it is at least as important as genetic factors, making this choice the most accurate.

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What is the main topic of the talk?

• The most important things for happiness

• Surprising research about happiness

• How happy people spend their money

Answer explanation

The correct answer, 'Surprising research about happiness', indicates that the talk focuses on unexpected findings related to happiness, rather than just general tips or spending habits.

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What statement would the speaker likely agree with?

• Money is not important for happiness.

• Very rich people are often less happy.

• A good job is more important than money.

Answer explanation

The speaker likely values emotional well-being over material wealth, suggesting that happiness can be achieved without money. This aligns with the statement "Money is not important for happiness."

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According to the talk, the 'happiness number' in the United States is around ____.

• $75,000

• $200,000

• $25,000

Answer explanation

The talk indicates that the 'happiness number' in the United States is approximately $75,000, which suggests that this income level is associated with optimal life satisfaction.

What is NOT mentioned as a way to spend money?

• Doing things that interest you

• Traveling with your family

• Starting your own business

Answer explanation

The correct answer is 'Starting your own business' because it is not mentioned as a way to spend money, while 'Doing things that interest you' and 'Traveling with your family' are both included.

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