It’s not every day that United States history...

It’s not every day that United States history mixes with microbes (微生物) in the soil. But when the grassland on the National Mall in Washington, D.C. was replaced, it offered scientists the opportunity to study changes in the soil beneath.

The work focused on the bacteria present in the soil. To the researchers’ surprise, the communities of microbes did not change a lot before and after the replacement. These communities in the soil are known as the soil microbiome (微生物群).

“My lab is interested in how microbes can move around in the environment , and how they change and adapt as a result of this movement,” explains Jo Anne Crouch, the lead author of the study. “We thought that the new ‘imported ’turf (草皮) from New Jersey would introduce different communities of bacteria to the National Mall. However, we found that they weren’t significantly different.”

Crouch’s work focused on turf grass ，defined as a large area of green grass. It is made up of the grass, its roots, and the soil and microbes found with them.

Think of the soil microbiome as similar to the collection of microbes found in the human body. When the microbes are out of balance , it can make someone sick. Crouch says it’s the same for the soil microbiome. Many of the worst diseases in crops or other environments are linked with changes in the soil microbiome.

Additionally, Crouch says that even though the changes between the soils were small, scientists are also starting to appreciate that sometimes a really important microbe is a rare one. This means it would be hard to observe but could greatly affect how the groups function as a whole. “Agricultural areas and other natural spaces are highly and easily hurt by negative changes,” she says. “Microbiomes offer an almost entirely new opportunity to influence interactions among plants and microbes to improve plant productivity and health. ”

1.Why did the researchers feel surprised when they focused on the bacteria in the soil?

A. More bacteria appeared in the soil.

B. Microbes were replaced obviously.

C. Soil microbiome almost remained stable.

D. The soil microbiomes damaged the environment.

2.By studying the turf grass , what did Crouch and her team find?

A. Microbes grew faster in their own community.

B. Soil microbiomes were different in different places.

C. Turf grass adapted to the environment nearby very soon.

D. Similar communities of bacteria were brought by turf grass.

3.Why did the author mention the microbes in the human body?

A. To indicate the two play a similar role.

B. To prove they are both the causes of diseases.

C. To examine the environments people live in.

D. To analyze the changes of human microbes.

4.What does Crouch mean in the last paragraph?

A. Microbes are still as hard to observe as before.

B. Studies on microbiomes can be beneficial to agriculture.

C. Scientists are still puzzled about the effect of microbiomes.

D. Too many microbiomes in the soil mean no harm to plants.

高三英语阅读理解中等难度题查看答案及解析

It’s true that everyone loves a mystery, ___________ when mixes history with fiction. That’s why “ The Da Vinci Code ” is so popular.

高三英语单项填空中等难度题查看答案及解析

A CCTV history program that mixes documentaries and drama with variety shows in 1. hope of promoting the protection of prized cultural legacies (遗产) has become a hit. Notional Treasure is the first Chinese TV program 2. (take) this unique approach. It consists of 10 episodes (集) airing; on Sundays on Channel Three of CCTV.

Each episode exhibits three of the 3. ( fine) cultural treasures in China, each presented by a celebrity (名人) and an expert who 4. (act) as “national treasure keepers”. The treasure keepers tell the stories behind the pieces and uncover the mysteries that surround them. Yu Lei,5. is the producer and director of the show, said, “The show presents the treasures through different artistic methods, and tries to make sense of the stories and history behind each treasure, so that audiences can come to appreciate not only their beauty, but also their cultural 6. (significant).”

Nine major museums are participating,7. (range) from The Palace Museum to Liaoning Provincial Museum. As for the treasures, selection criteria, Yu said the show tries to take 8. account historical, artistic and scientific values. “The pieces featured on the show are 9. (possible) not all the so-called representative pieces in these museums, but they should represent some historic periods and reflect an important point in history.”

The roles of national treasure keepers in the first episode 10. (play) by Tony Leung Ka-fai, Li Chen and Wang Kai on December 3, 2017. Yu said the crew hopes to reach more people by using these famous actors.

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阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。

A CCTV history program that mixes documentaries and drama with variety shows in 1. hope of promoting the protection of prized cultural legacies (遗产) has become a hit. National Treasure is the first Chinese TV program 2. (take) this unique approach. It consists of 10 episodes (集) airing on Sundays on Channel Three of CCTV.

Each episode exhibits three of the 3. (fine) cultural treasures in China, each presented by a celebrity and an expert who 4. (act) as ''national treasure keepers''. Yu Lei, producer and director of the show, said, ''The treasure keepers tell the stories behind the pieces and uncover the mysteries 5. surround them, so that audiences can come to appreciate not only their beauty, but also their cultural 6. (significant). ''

Nine major museums are participating, 7. (range) from The Palace Museum to Liaoning Provincial Museum. As for the treasures' selection criteria, Yu said the show tries to take8. account historical, artistic and scientific values. ''The pieces featured on the show are 9.(possible) not all the so-called representative pieces in these museums, but they should represent some historic periods and reflect an important point in history. ''

The roles of national treasure keepers in the first episode 10. (play) by Tony Leung Ka-fai, Li Chen and Wang Kai on December 3, 2017.

高三英语语法填空中等难度题查看答案及解析

People in the United States honor their parents with 2 special days: Mother’s Day on the second Sunday in May and Father’s Day on the 3rd Sunday in June. These days are to show love and respect for parents. They raise their children and educate them to be responsible citizens. They give love and care. These two days offer an opportunity to think about the changing roles of mothers and fathers. More mothers now work outside the home and more fathers must help with childcare.

These two special days are celebrated in many different ways. On mother’s Day, people wear carnations. A red one symbolizes a living mother. A white one shows that the mother is dead. Many people attend religious services to honor parents. It’s also a day when people whose parents are dead visit the cemetery(grave). On these days families get together at home as well as in restaurants. They often have outdoor barbecue for Father’s Day. These are days of fun and good feelings and memories.

Another tradition is to give cards and gifts. Children make them in school. Many people make their own presents. These are more valued than those bought in stores. It’s not the value of the gift that is important, but “the thought that counts”. Greeting card stores, florists, candy makers, bakers, phone companies and other stores do lots of business during these holidays.

1.Which is NOT a reason for children to show love and respect for parents?

2.What do you know from the passage?

3.Which do you know about “carnation”?

4.On Mother’s Day and Father’s Day ___________.

5.What do you think “florists” do ?

高三英语阅读理解中等难度题查看答案及解析

People in the United States honor their parents with two special days: Mother’s Day, on the second Sunday in May, and Father’s Day, on the third Sunday in June.

Mother’s Day was proclaimed a day for national observance by President Woodrow Wilson in 1915. Ann Jarvis from Grafton, West Virginia, had started the idea to have a day to honor mothers. She was the one who chose the second Sunday in May and also began the custom of wearing a carnation.

In 1909, Mrs. Dodd from Spokane, Washington, thought of the idea of a day to honor fathers. She wanted to honor her own father, William Smart. After her mother died, he had the responsibility of raising a family of five sons and a daughter. In 1910, the first Father’s Day was observed in Spokane. Senator Margaret Chase Smith helped to establish Father’s Day as a national commemorative day in 1972.

These days are set aside to show love and respect for parents. They raise their children and educate them to be responsible citizens. They give love and care.

These two special days are celebrated in many different ways. On Mother’s Day people wear carnations. A red one symbolizes a living mother. A white one shows that the mother is dead．Many people attend religious services to honor parents. It is also a day when people whose parents are dead visit the cemetery. On these days families get together at home, as well as in restaurants. They often have outdoor barbecues for Father’s Day. These are days of fun and good feelings and memories.

1.According to the passage, which of the following about the second Sunday in May is

NOT true?

2.Choose the right time order of the following events.

a. The first Father’s Day was observed.

b. Mother’s Day was proclaimed a day for national observance

c. Father’s Day became a day for national observance.

d. The idea of honoring fathers was brought up

3.Who plays the most important role in Father’s Day becoming a national commemorative day?

4.From the passage, we know in the U.S. ________________.

5.The author’s purpose of writing this passage is to __________

高三英语阅读理解中等难度题查看答案及解析

People in the United States honor their parents with two special days: Mother’s Day, on the second Sunday in May, and Father’s Day, on the third Sunday in June. These days are set aside to show love and respect for parents. They raise their children and educate them to be responsible citizens. They give love and care. These two days offer a chance to think about the changing roles of mothers and fathers. More mothers now work outside the home. More fathers must help with child-care.

These two special days are celebrated in many different ways. On Mother’s Day people wear carnations. A red one stands for a living mother. A white one shows that the mother is dead. Many people attend religious services to honor parents. It is also a day when people whose parents are dead visit their graves. On these days, families get together at home and in restaurants. They often have outdoor BBQs for Father’s Day. These are days of fun and good feelings and memories.

Another tradition is to give cards and gifts. Children make them in school. Many people make their own presents. These are valued more than the ones bought in stores. It is not the value of the gift that is important, but it is “the thought that counts”. Greeting card stores, florists, candy makers, bakeries, telephones companies and other stores do a lot of business during these holidays.

60. Which is NOT a reason for children to show love and respect for parents?

A. Parents bring up children.

B. Parents give love and care to children.

C. Parents pass away before children grow up.

D. Parents educate children to be good persons.

61. What do you know from the passage?

A. Mother’s Day and Father’s Day are both in May.

B. Not all the children respect their parents.

C. Fewer women worked outside the home in the past.

D. Fathers are not as important as mothers at home.

62. Which do you think is right about “carnation”?

A. It only has two kinds of color.

B. It is a special kind of clothes people wear on Mother’s Day or Father’s Day.

C. People can wear carnations only on the second Sunday in June.

D. It’s a kind of flower showing love and best wishes.

63. What do you think “florists” do?

A. They sell flowers.

B. They made bread.

C. They offer enough room for having family parties.

D. They sell special clothes for Mother’s Day and Father’s Day.

高三英语阅读理解简单题查看答案及解析

People in the United States honor their parents with two special days: Mother’s Day, on the second Sunday in May, and Father’s Day, on the third Sunday in June.

Mother’s Day was proclaimed宣告 a day for national observance by President Woodrow Wilson in 1915. Ann Jarvis from Grafton, West Virginia, had started the idea to have a day to honor mothers. She was the one who chose the second Sunday in May and also began the custom of wearing a carnation康乃馨.

In 1909, Mrs. Dodd from Spokane, Washington, thought of the idea of a day to honor fathers. She wanted to honor her own father, William Smart. After her mother died, he had the responsibility of raising a family of five sons and a daughter. In 1910，the first Father’s Day was observed in Spokane. Senator Margaret Chase Smith helped to established Father’s Day as a national commemorative纪念的 day in 1972.

These days are set aside to show love and respect for parents. They raise their children and educate them to be responsible citizens. They give love and care.

These two special days are celebrated in many different ways. On Mother’s Day people wear carnations. A red one symbolizes a living mother. A white one shows that the mother is dead．Many people attend religious services to honor parents. It is also a day when people whose parents are dead visit the cemetery. On these days families get together at home, as well as in restaurants. They often have outdoor barbecues for Father’s Day. These are days of fun and good feelings and memories.

1.According to the passage, which of the following about the second Sunday in May is not true ?

2.Choose the right time order of the following events.

a. The first Father’s Day was observed

b. Mother’s Day was proclaimed a day for national observance

c. Father’s Day became a day for national observance.

d. The idea of honoring fathers was bought up

3.Who plays the most important role in Father’s Day becoming a national commemorative day?

4.From the passage, we know in the U.S ________________.

5.The author’s purpose of writing this passage is to __________

高三英语阅读理解中等难度题查看答案及解析

People in the United States honor their parents with two special days: Mother’s Day, on the second Sunday in May, and Father’s Day, on the third Sunday in June. These days are set aside to show love and respect for parents. They raise their children and educate them to be responsible citizens. They give love and care. These two days offer a chance to think about the changing roles of mothers and fathers. More mothers now work outside the home. More fathers must help with child-care.

These two special days are celebrated in many different ways. On Mother’s Day people wear carnations. A red one stands for a living mother. A white one shows that the mother is dead. Many people attend religious services to honor parents. It is also a day when people whose parents are dead visit their graves. On these days, families get together at home and in restaurants. They often have outdoor BBQs for Father’s Day. These are days of fun and good feelings and memories.

Another tradition is to give cards and gifts. Children make them in school. Many people make their own presents. These are valued more than the ones bought in stores. It is not the value of the gift that is important, but it is “the thought that counts”. Greeting card stores, florists, candy makers, bakeries, telephones companies and other stores do a lot of business during these holidays.

1. Which is NOT a reason for children to show love and respect for parents?

A. Parents bring up children.

B. Parents give love and care to children.

C. Parents pass away before children grow up.

D. Parents educate children to be good persons.

2. What do you know from the passage?

A. Mother’s Day and Father’s Day are both in May.

B. Not all the children respect their parents.

C. Fewer women worked outside the home in the past.

D. Fathers are not as important as mothers at home.

3.Which do you think is right about “carnation”?

A. It only has two kinds of color.

B. It is a special kind of clothes people wear on Mother’s Day or Father’s Day.

C. People can wear carnations only on the second Sunday in June.

D. It’s a kind of flower showing love and best wishes.

4.What do you think “florists” do?

A. They sell flowers.

B. They made bread.

C. They offer enough room for having family parties.

D. They sell special clothes for Mother’s Day and Father’s Day.

高三英语阅读理解中等难度题查看答案及解析

It’s not every day that you see pigeons(鸽子)with cowboy hats on their tiny heads walking or flying around, unless you live in Las Vegas, where cowboy-hat-wearing pigeons are actually a thing people have been constantly taking about these days.

It all started on December 5, when a Las Vegas citizen named Bobby Lee noticed two funny-looking birds walking near a dustbin. The pigeons drew his attention because they were wearing tiny cowboy hats — one red and one grey — so he took out his smartphone and started filming them. Later, he uploaded the video online, where is quickly spread. The next day, everyone was talking about Las Vegas’ cowboy-hat-wearing pigeons, and Lee was getting phone calls from agencies trying to license his video.

It was only a matter of time before news outlets picked up the story and reported on the mysterious pigeon cowboys spotted around Las Vegas. The only link anyone could think of was the Wrangler National Rodeo Finals that were taking place in town at the time, but the Professional Rodeo Cowboys Association, which organized the event, denied any involvement.

While some netizens just found the idea cute and jumped at the opportunity to catch the pigeons on camera if they spotted them around Vegas, others expressed concern about the birds’ well-being. They even mentioned animal cruelty.

Hillman, the founder of local pigeon rescue Lofty Hopes, said that her organization was trying to track down the birds and remove their hats, but trapping them with food has proven very difficult so far. That’s because the two known cowboy-hat-wearing pigeons have become very popular around Las Vegas, and people are constantly throwing them much food.

“When you see them today, you could see some loose feathers in the glue around the hat, and it’s surely a concern,” Hillman said, adding that she believed the hats had been glued on with a strong adhesive (粘合剂).

1.What has been a hot topic in Las Vegas recently?

A.The return of cowboy hats. B.Pigeons approaching people.

C.Pigeons wearing cowboy hats. D.The hobby of watching pigeons.

2.What made Bobby Lee film the two pigeons with his smartphone?

A.Their unusual decorations. B.Their unique feather colors.

C.Their great popularity online. D.Their strange way of walking.

3.What was netizens’ attitude towards the pigeon cowboys?

A.They went too far about them. B.They thought nothing of them.

C.They showed little interest in them. D.They had a mixed response to them.

4.Why is it hard to trap the two pigeons with food?

A.Because they are rather particular about food.

B.Because they always have abundant food to eat.

C.Because they are smart enough not to be tricked.

D.Because they are well protected by pigeon watchers.

高三英语阅读理解中等难度题查看答案及解析