This morning we're going to head off down int...

This morning we're going to head off down into the wetland, into a very specific kind of wetland called the Prairie fen.

You can find Nate Fuller counting butterflies. The Sarett Nature Center needs an accurate count of Mitchell's satyr butterflies to help preserve one of their last known habitats. They're very particular about the kind of habitat where they can live, which is part of what makes them so rare and amazing indicators for our water quality. Today, Sarett expert Ashley Cole-Wick with Michigan's Natural Features Inventory helps Fuller count. She says "When I first started working on the butterfly in 2013, we had 18 populations and this year in 2019, we have 10."

The Mitchell Seder went on the endangered species list in 1991. Initially it was thought that loss of wetlands contributed to their decline. Fuller says "It's not just habitat availability. Its groundwater and the amount in the quality of groundwater coming into these wetlands seem to be a challenge for the butterfly. Nothing has all been sorted out exactly. ” While the decline is likely a combination of factors. the fact that water quality might contribute is alarming because the wetlands are the headwaters for the Midwest's rivers and streams.

A captive breeding （人工繁殖）program was started four years ago at the Toledo Zoo to help get to the bottom of the mystery. Today Director Ryan Walsh who heads the program says it's been, the only successful captive program. The caterpillars （毛毛虫）spend the winter in a special weather control room that help determine the Mitchell satyrs don't do well below 4. 4 degrees Celsius, a temperature that prevents the Fen wetlands from the hard freezes which kill the insects. With that knowledge, the program produced 1300 new eggs this summer, a development that may go a long way toward restoring the population. And if all goes well, may one day the Mitchell satyr butterfly earn a ticket off Endangered Species List.

1.What are the indicators for the water quality?

A.The habitats. B.The butterflies.

C.The wetlands. D.The experts.

2.What is the main idea of the third paragraph?

A.The importance of water quality.

B.Actions taken to protect the butterflies.

C.The reasons why the butterflies decline.

D.The natural conditions for the butterflies.

3.What does the underlined word "restoring" in Paragraph 4 most probably mean?

A.Preserving. B.Increasing.

C.Recovering. D.Controlling.

4.What can we learn about the butterfly?

A.It can easily be found. B.It is not endangered now.

C.It will die above 4. 4 degree Celsius. D.It can be bred by humans.

高三英语阅读理解中等难度题查看答案及解析

Did you move your way into work this morning with your head down? Obviously, you did. It's Wednesday and, if you are in New York, it’s a rainy, annoying day. 1. Walk like a happy person and you’ll actually feel happier.

In the study, people walked on treadmills (跑步机) for 15 minutes. Around them were cameras with sensors that picked up their movements, and in front of them was a screen displaying a gauge (计量器) that moved to the left if they walked like they were depressed, and to the right if they walked like they were happy. 2.

Before the task, they were shown a list of words, some positive (pretty) and some negative (afraid, anxious). 3. The people who walked like a depressed person ended up recalling more negative words and (slightly) fewer positive words than the people who'd merrily bounced along on their treadmills. This means that the people who'd walked as if they were sad did, in fact, end up feeling sadder.

4.Harvard social psychologist Amy Cuddy found that if you stand like a powerful person, you'll feel more powerful. My high school swim coach used to tell us to fake (假装) it till you feel it; science as of late seems to be suggesting that she had a point. 5.Have a try and walk.

A.So now are you still sad?

B.They just remember the positive words.

C.Their arms swing at their sides as they go along.

D.But there's new evidence that you can walk yourself right out of it.

E.But the people in the study didn't know what the gauge was measuring.

F.That's to say, you can change your mood simply by changing your movement.

G.After they stopped, they were asked to write down as many words as they could.

高三英语七选五困难题查看答案及解析

短文改错

Today our class go to climb a mountain. This morning we set off to a mountain by buses. At about nine o’clock we arrived at the foot of the mountain and with the guidance of our teacher, he started climbing. Because at the half of the mountain some of us got tired, we all were very excited. When we got to the top, we cheered excitedly. Seeing from the top of it, the view is wonderful. Unfortunately, when we began to go down the mountain, we were catching in a storm. We shared umbrellas and raincoats each other and walked more cautious. At last we all reached the parking lot safely and got on the bus heading back to home.

高三英语短文改错中等难度题查看答案及解析

I was late this morning because my alarm o’clock failed to _______．

A．go out               B．go away             C．go off                D．go without

高三英语单项填空简单题查看答案及解析

To understand the grammar of the sentence, you must break it  into parts.

A. down                  B. up                       C. off                      D. out

高三英语单项填空中等难度题查看答案及解析

To understand the grammar of the sentence, you must break it ____into parts.

高三英语单项填空简单题查看答案及解析

To understand the grammar of the sentence, you must break it ________into parts.

A. down                  B. up                       C. off                      D. out

高三英语单项填空中等难度题查看答案及解析

This summer, Monika Lutz’s life took an unusual turn. Instead of heading off to college, the high school graduate packed her bags for a Bengali jungle. Lutz, like a growing number of other young Americans, is taking a year off. Gap(间隔) years　 are quite common in Britain and Australia, but they are just beginning to catch on in the U.S. Lutz, who grew up in Boulder, Colo., has put together a 14-month schedule that includes helping deliver solar power to some communities in India and interning (实习) for a fashion designer in Shanghai---experiences that are worlds away from the lecture halls and university dormitories that await other students. “I could not be happier,” she says.

Why are students attracted to the gap-year concept? According to new survey data from Karl Haigler and Rae Nelson, education-policy experts and co-authors of The Gap-Year Advantage, the most common reason for this is to avoid burnout. “I felt like I was focused on college as a means to an end,” says Kelsi Morgan, an incoming Middlebury College freshman who spent last year interning for a judge in Tulsa, Okla., and teaching English at an orphanage in the Dominican Republic. The hope is that after a year out of the classroom, students will enter college more energized, focused and mature. That can be an advantage for colleges too. Robert Clagett, dean of admissions at Middlebury, did some research a few years ago and found that a single gap semester was the strongest predictor of academic success at his school.

Most experts recommend securing a spot in college before taking a gap year and warn against using the time off to lengthen your resume. “Most admissions folks can see right through that,” says Jim Jump, the academic dean of St. Christopher’s School in Richmond, Va. But for students like Lutz, who, after getting rejected from five Ivies, decided to take time off, a gap year can help focus interests. Lutz now plans to apply mostly to non-Ivies that have strong marketing programs. “This experience has really opened my eyes to the opportunities the world has to offer,” she says.

But at least one education expert doesn’t want schools spreading the gap-year message. In a study that followed 11,000 members of the high school class of 1992 for eight years after graduation, Stefanie DeLuca, a sociology professor at Johns Hopkins University, found that, all things being equal, those who delayed college by a year were 64% less likely to complete a bachelor’s degree than those who didn’t. DeLuca did not say whether these students voluntarily started college late, but at the very least, her work indicates that taking a gap year doesn’t guarantee success. “I’m not going to say that time off does not have benefits,” says DeLuca. “But I think we should not be so enthusiastic.”

1.The students take gap years mainly because ______.

A. they want to be more unusual

B. they want to refresh themselves

C. some experts advise them to do so

D. their parents think it good for them

2.According to Lutz, the gap year has made her more ______.

A. energetic　　　 B. relaxed

C. practical　 　　 D. enthusiastic

3.Stefanie DeLuca probably agrees that ______.

A. students should think twice before taking gap years

B. taking gap years enables students to achieve success

C. schools should encourage their students to take gap years

D. taking gap years increases students’ chances of getting a good job

4.What’s the author’s attitude towards gap years?

A. Sceptical.　 　 B. Positive.

C. Disapproving. D. Objective.

高三英语阅读理解中等难度题查看答案及解析

To understand the grammar of sentence, you must break it ___into parts.

A. down              B. up               C. off                  D. out

高三英语单项填空中等难度题查看答案及解析

At this time tomorrow　 　　　　　　 over the Atlantic．

A．we’re going to fly

B．we’ll be flying．

C．we’ll fly

D．we’re to fly

高三英语单项填空中等难度题查看答案及解析