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题型:阅读理解-单选 难度:0.15 引用次数:113 题号:16025125

A study says the origin of human is in Botswana. Researchers said they used DNA to find out where modern humans came from. They believe all our roots (根) are in an area of northern Botswana. Humans were there 200,000 years ago. They lived there for at least 70,000 years and then migrated (迁徙) around the African continent. They then started moving to Europe and Asia. Researcher Professor Vanessa Hays, from the University of Sydney, said, “We’ve known for a long time that modern humans originated in Africa about 200,000 years ago.”

The researchers made sure of an area called Okavango as where we came from. There used to be a big lake but it is now a salt flat (盐碱地). People had water, hunting and farmland. Scientists studied DNA from 200 people who live near the area today. They are from the Khoisan people, who live in modern-day South Africa and Namibia. They had a lot of DNA called L0. Professor Hayes explained why L0 is important. She said, “Whenever a Dew migration (迁徙) happens, our L0 records that migration event as a time-stamp. Everyone walking around today comes from this region.”

1. Where did modern humans first come from according to the passage?
A.Botswana.B.Europe.C.Asia.D.India.
2. When did modern humans originate in Africa?
A.About 70,000 years ago.B.About 90,000 years ago.
C.About 20,000 years ago.D.About 200,000 years ago.
3. According to Professor Hays, L0 is important because ________.
A.200 people who live near Okavango had a lot of L0B.People with L0 had water, hunting and farmland
C.People with L0 are from the Khoisan peopleD.L0 records people’s migration as a time-stamp
4. Who might write this passage?
A.A tour guide in Africa.B.An English teacher in junior high school.
C.A scientist of human origin.D.A student who studies math in university.
【知识点】 科普知识 说明文

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【推荐1】Plants are very important living things. Life could not go on if there were no plants. This is because plants can make food from air, water and sunlight. Animals and man cannot make food from air, water and sunlight. Animals get their food by eating plants and other animals. Therefore animals and man need plants in order to live. This is why we find that there are so many plants around us.
If you look carefully at the plants around you, you will find that there are two kinds of plants: flowering plants and non-flowering(不开花的) plants.
Flowering plants can make seeds(种子). The seeds are protected by the fruits. Some fruits have one seed, some have two, three or four, and some have many seeds. But a few fruits have no seeds at all. An example of a fruit without seeds is the banana fruit.
Most non-flowering plants do not grow from seeds. They grow from spores(孢子). Spores are very, very small. Some spores are so small and light that they can float in the air. We may say that spores are quite the same as seeds. When these spores fall on wet and shady(阴凉的) places, they usually grow into new plants.
1. What fact does the passage lead you to believe?
A.Of all living things, animals are most important.
B.Spores are seeds.
C.All fruits of flowering plants have seeds.
D.Without plants, man will die out.
2. The paragraph following the passage will be about ________.
A.how plants can make food from air
B.how spores grow into new plants
C.why some plants have no seeds
D.why non-flowering plants are more important than flowering plants
3. This passage is most likely to be taken from ________.
A.a story bookB.a novel
C.a science magazineD.a laboratory report
2013-07-12更新 | 957次组卷
阅读理解-单选(约320词) | 困难 (0.15)
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文章大意:本文主要介绍了宠物猫和主人在一起时间长了,就会模仿主人的习惯,本文详细地分析了其原因。

【推荐2】It’s said that cats are not just pets to us all these years. They are, in fact, learning from their owners and taking them as models. Scary, huh?

A new study from the University of Messina shows that indoor cats who live closely to their owners copy the lives of their owners. For example, they sleep at the same time and eat at the same time. Just like a parent for a child, the same is true for a cat owner and his cat.

Many owners think their cats are as family members, so they spend much time with cats, hoping to give the best care and love for their cats. This is one of reasons the cats learn from their owner’s actions.

Another reason is that cats are clever animals with a long memory. Jane Brunt, director of the Catalyst Council, told Discovery News. “Cats watch us and notice our actions, knowing where their food is and what time to eat meals, where the washing areas are and how to open the cupboard door that’s closed.”

A new study also shows that cats understand 25—35 basic men’s words, such as food, eat, sit, no, stay, and stand. If owners train a cat to learn these words, cats will got closer to them. But in fact, cats can’t understand our ‘meows’.

So try to do better when you are in front of cats. If you spend a lot of time searching the kitchen, your cat will copy you and take food to its bowl for the night meal, too. That’s why cat owners and cats overweight rates often seem to synchronize.

Next time you reach for your kitchen, think twice. If your cat is watching, maybe she will overeat as well.

1. The text is mainly about ________.
A.cats and owners
B.cats and home
C.cats and language
D.cats and parents
2. According to the passage, what does the underlined word “synchronize” mean?
A.change quicklyB.go down
C.get lowerD.be the same
3. According to the passage, which of the following is True?
A.Cats can learn from men’s actions.
B.Cat can’t find food from closed cupboard.
C.Cats are always looking at their owners.
D.Cats understand most of our language.
4. The writer will probably agree that __________.
A.people need to live with the cats
B.children can keep cats in their houses
C.people should share the story of cats and men
D.pet owners should have healthier ways of life
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Lichun is called “Start of Spring” in English. It is the first solar term in the year. It also shows the change of the season and marks the end of winter and the beginning of spring. The date for Lichun usually comes on February 4 or February 5 in solar calendar. After Lichun, days become longer and nights become shorter, while weather is getting warmer. The following is some information about this solar term.

Stand the egg

③In China, it is said that the egg can be set up on the first day of the spring. It is believed that if someone can make the egg stand on the first day of spring, he will have good luck in the future. Try to stand eggs today on your own. If you succeed in the challenge, it means good luck is coming.

Hold a special ceremony(仪式)

④People in China began holding a special ceremony on the day of Start of Spring about 3,000 years ago. In ancient China, people mainly lived on farming, and the change of seasons greatly influenced farming. Spring is the season for planting. After Lichun farmers may start to work in the field. And vitality(活力)heads back to all lives. For city people, time has come for them to do outdoor activities and enjoy warm sunshine.

Eat special food—Chunjuan

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1. Which of the following Chinese poem is about Lichun?
A.泥牛鞭散六街尘,生菜挑来叶叶春B.桂轮开子夜,萤火照空时
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2. The purpose of making the egg stand is ________.
A.to be healthyB.to have good luckC.just for funD.to succeed
3. In ancient China, what influenced farming greatly according to the passage?
A.Warm sunshine.B.The change of seasons.C.The planting skills.D.The outdoor activities.
4. Which of the following shows the structure(结构)of this passage?(①=Paragraph 1)
A.B.C.D.
5. You may find the passage in ________.
A.B.C.D.
2022-04-07更新 | 329次组卷
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