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题型:阅读理解-阅读单选 难度:0.85 引用次数:46 题号:12311780

Genetics (遗传学) is the science of what makes you who you are. People who study genetics,called geneticists, learn about how parents pass on information through their genes (bits of information in your body that you cannot see) to their children. Is there anyone in the world like you? No! Your eye color,how tall you are and the size of your nose all come from the special information in your genes that makes you different from everyone else.

We get our genes from our parents. So genetics explains why you might look similar to your mother or brother and why you like some of the same things or speak in a similar way. Genes come in pairs-you get half from your mother and half from your father. We know that some genes are stronger than others. For example, the gene for brown eyes is stronger than the gene for blue eyes. So does it mean that if your parents both have brown eyes that you do too? Not always.

Because genes come in pairs, it's possible that someone with brown eyes has the gene for both brown eyes(B) and blue eyes (b). Look at the picture on the right that shows how the genes from Mum and Dad might be passed on to their children.

Why is genetics important? It's fun to think about which family members you are similar to and which genes you have, but studying genetics is also very important for our health. Some diseases are in our genes, so studying genetics can help us know if we might become ill in the future. It also helps doctors and scientists to know what medicine might help that disease.

1. What is the first paragraph mainly about?
A.What genetics is.
B.What geneticists learn about.
C.How the size of your nose comes from.
D.How parents pass on information to their children.
2. What does human genetics explain?
A.Why you look like your friends.
B.Why you are different from other people.
C.Why parents pass on information to their children.
D.Why many people in the world look exactly the same.
3. What can we know from the text?
A.Our genes come in pairs.
B.Some genes are longer than others.
C.People get their genes mainly from their mothers.
D.Your parents both have brown eyes that you do too.
4. Why is studying genetics very important according to the text?
A.Because it is very funny.B.Because it is useful for scientists.
C.Because it can help us fight diseases.D.Because it can help us make medicine.

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【推荐1】As the days get shorter and the cold weather rolls in, we all want to curl up in a blanket and sleep until spring rolls around. But making time to get outside in the sun, even when it's cold out, could have bigger mood benefits than you might realize. New research finds that sunlight exposure is by far the greatest weather-related factor determining mental health. In other words, more sunshine, more happiness.

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【推荐2】Courtesy in English

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    1     Beginning your request with “May I...?” “Could I...?” is considered polite. For example, “May I have a latte?” It is also politer to say, “I’ll have...” or “I’d like...” instead of “I want...” because it will be considered as less direct.


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Local people in other countries sometimes speak really fast, so it can be hard for us to catch all the words. In such a situation, we can say, “Pardon me?” to ask them to repeat what they said. In my opinion, saying “Can you please repeat that? I didn't follow.” is the politest way.


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【推荐3】In a recent survey in the United Kingdom, elderly adults who joined weekly read-aloud groups reported better concentration and an improved ability to socialize.

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The second-century Greek doctor Antyllus even prescribed daily recitation to his patients, recommending it as a kind health-giving nutrient and declaring “Epic verse is the best for one’s health.” Reading an epic poem might be a tall order, but in truth, almost any kind of reading to another person can be beneficial. That seems to be especially true for patients suffering from Alzheimer’s disease, according to a 2017 University of Liverpool study of 800,000 patients. “Reading a literary text together explores the power of reading as a cognitive (认知的) process, allowing readers a sense of subjective and shared experiences at the same time,” the study’s authors wrote.

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D.Thankfulness should be expressed by reading.
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