We ____________ on the journey now but for this bad weather.
A. are B. were C. would be D. will be
高一英语单项填空中等难度题
We ____________ on the journey now but for this bad weather.
A. are B. were C. would be D. will be
高一英语单项填空中等难度题查看答案及解析
I suggested to my father that we ______ to Dalian for a holiday this summer, but the expression on his face suggested that he ______ to it.
A. go; shouldn't agree B. would go; shouldn't agree
C. go; didn't agree D. would go; didn't agree
高一英语单项填空简单题查看答案及解析
—The weather isn't good enough for an outing, is it?
—Not in the least. We can't have ______ at this time of the year.
A．a worse day B．a nicer day C．such bad a day D．so fine a day
高一英语单项填空中等难度题查看答案及解析
Dust on furniture may be bad news for waistlines (腰围). But it’s far too early to add dusting to a weight-loss plan. Dietary fats and other materials that make up indoor dust can send a signal to human fat cells, telling them to grow. That process, in turn, might slow the body’s rate of burning energy. Such changes could add to any weight problems a person might have.
“We don’t know what that means to long-term health and certain diseases yet,” says Heather Stapleton, one of the study’s authors. But she notes that her team’s findings also raise a question of whether pollutants in dust might play some role in the growing, global problem of obesity (肥胖).
Stapleton and her colleagues collected dust from homes and offices. Studies found that some materials in the dust could turn on a protein (蛋白质) called PPAR-gamma 1. It’s found in many human tissues. Turning this protein on can cause fat cells to grow. Researchers think this protein may be involved in obesity. But a second study now finds evidence that certain fats are mostly to blame. Cooking oils may send out some of these fats into the air, where they eventually find their way into house dust. Or, the authors say, the fats might enter house dust as part of the hair or skin cells shed (脱落) by people or pets.
“While the findings are amazing,” says Mitchell Lazar, another study author, “these findings need to be taken as very limited.” Indeed, he adds several cautions about how the findings should be understood. “For one thing, people eat these fats in foods all of the time. That is likely to be a lot more than would be consumed from indoor dust,” he said.
1.What do we know about PPAR-gamma 1? _____
A. It comes from dust.
B. It leads to weight gain.
C. It can help get rid of dust.
D. It only appears in human bodies.
2. What’s the best title for the text? _____
A. Can house dust make us fat?
B. Why is it important to clean?
C. Anything to do to deal with dust?
D. What is the best way to lose weight?
高一英语阅读理解中等难度题查看答案及解析
________we’ll have our sports meet this week ________the weather.
A．If; depend on B．Whether; depend on
C．If; depends on D．Whether; depends on
高一英语单项填空简单题查看答案及解析
It’s never a real problem for us when the weather gets cold. We can put on more clothes, stay next to a fireplace, turn on the air conditioner or simply travel to a warmer city to spend the winter – people have many different ways of dealing with the cold.
But things are not as easy for plants. Unlike humans, plants can’t move to escape the cold or generate heat ( 发热) to keep themselves warm. So how do they manage to survive the freezing winter?
It turns out that plants have their own strategies （策略） too, said a study published on Dec 22 in the journal Nature.
According to researcher Amy Zanne of George Washington University, US, the cold is a big challenge for plants. Their living tissues （活组织） can be damaged when they freeze. “It’s like a plant’s equivalent to frostbite ( 相当于冻疮),” Zanne told Science Daily. Also, the process of freezing and thawing (解冻) can cause air bubbles （气泡） to form in the plant’s water transport system. “If enough of these air bubbles come together as water thaws they can block the flow of water from the roots to the leaves and kill the plant,” she explained.
To live through cold weather, plants have developed three traits （特性） , according to the study. Some plants, such as oak trees（橡树）, avoid freezing damage by dropping their leaves before the winter chill sets in – effectively shutting off the flow of water between roots and leaves – and growing new leaves and water transport cells when the warm spring returns.
Other plants, pine trees（松树） for example, protect themselves by narrowing their water transport cells, which makes it easier for cells to travel among air bubbles.
The third strategy is also the most extreme – some plants die on the ground in winter and start growing as new plants from seeds when conditions get warmer.
However, the study also found that these smart strategies were developed very slowly – over millions
of years of evolution （ 进化）. This leads scientists to worry that plants may not be able to deal with human-caused climate change, which has only started occurring over the past few decades.
Scientists are hoping that this study can help people find possible ways to save plants from the threat
of climate change.
1.What is the article mainly about?
A. Why plants are not afraid of the winter chill.
B. The ways that plants survive cold weather.
C. Changes in plants’ water transport system in winter.
D. How plants evolve to keep up with climate change.
2. According to the article, if a plant freezes in the winter, ______.
A. it produces more living tissues to stay alive
B. its leaves quickly fall out and its roots begin to die
C. lots of air bubbles form in its water transport system
D. its water transport system could be blocked in the spring
3.What are scientists worried about when it comes to plants according to the article?
A. Plants may not be able to adapt to the increasingly cold climate.
B. Human activities might have a great impact on the pace of plants’ evolution.
C. Plants may not be able to evolve fast enough to adapt to human-caused climate change.
D. The strategies plants develop are not good enough to protect them against cold.
高一英语阅读理解中等难度题查看答案及解析
It’s never a real problem for us when the weather gets cold. We can put on more clothes, stay next to a fireplace, turn on the air conditioner or simply travel to a warmer city to spend the winter – people have many different ways of dealing with the cold.
But things are not as easy for plants. Unlike humans, plants can’t move to escape the cold or generate heat ( 发热) to keep themselves warm. So how do they manage to survive the freezing winter?
It turns out that plants have their own strategies （策略） too, said a study published on Dec 22 in the journal Nature.
According to researcher Amy Zanne of George Washington University, US, the cold is a big challenge for plants. Their living tissues （活组织） can be damaged when they freeze. “It’s like a plant’s equivalent to frostbite ( 相当于冻疮),” Zanne told Science Daily. Also, the process of freezing and thawing (解冻) can cause air bubbles （气泡） to form in the plant’s water transport system. “If enough of these air bubbles come together as water thaws they can block the flow of water from the roots to the leaves and kill the plant,” she explained.
To live through cold weather, plants have developed three traits （特性） , according to the study. Some plants, such as oak trees（橡树）, avoid freezing damage by dropping their leaves before the winter chill sets in – effectively shutting off the flow of water between roots and leaves – and growing new leaves and water transport cells when the warm spring returns.
Other plants, pine trees（松树） for example, protect themselves by narrowing their water transport cells, which makes it easier for cells to travel among air bubbles.
The third strategy is also the most extreme – some plants die on the ground in winter and start growing as new plants from seeds when conditions get warmer.
However, the study also found that these smart strategies were developed very slowly – over millions
of years of evolution （ 进化）. This leads scientists to worry that plants may not be able to deal with human-caused climate change, which has only started occurring over the past few decades.
Scientists are hoping that this study can help people find possible ways to save plants from the threat
of climate change.
1.What is the article mainly about?
A. Why plants are not afraid of the winter chill.
B. The ways that plants survive cold weather.
C. Changes in plants’ water transport system in winter.
D. How plants evolve to keep up with climate change.
2.According to the article, if a plant freezes in the winter, ______.
A. it produces more living tissues to stay alive
B. its leaves quickly fall out and its roots begin to die
C. lots of air bubbles form in its water transport system
D. its water transport system could be blocked in the spring
3.What are scientists worried about when it comes to plants according to the article?
A. Plants may not be able to adapt to the increasingly cold climate.
B. Human activities might have a great impact on the pace of plants’ evolution.
C. Plants may not be able to evolve fast enough to adapt to human-caused climate change.
D. The strategies plants develop are not good enough to protect them against cold.
高一英语阅读理解中等难度题查看答案及解析
— The journey was not as nice as we had expected．
— _________. The weather was awful and the time was short．
A．I don’t agree B．I don’t think so C．Absolutely D．Come off it
高一英语单项填空中等难度题查看答案及解析
听下面一段独白，回答以下小题。
1.What is the weather like on the journey?
A. Cold. B. Sunny. C. Cloudy.
2.Where is the bank?
A. On Floor A. B. On Floor B. C. On Floor C.
3.Where can passengers find a toilet on Floor A?
A. Beside the bar. B. Beside the restaurant. C. Beside the shop.
4.Who can use the relaxing room on Floor C?
A. All passengers on board. B. Passengers travelling with cars. C. Passengers travelling without cars.
高一英语短文困难题查看答案及解析
Now the ice isn’t hard enough ______ on. So we have no choice but ______ away.
A.to skate; to go B.skating; go
C.skate; going D.skates; going
高一英语单项填空困难题查看答案及解析