While the content of tobacco advertising may ...

While the content of tobacco advertising may not be _____ targeted at teenagers, the attractive images in the ads are impressive to them.

A.explicitly B.extremely C.elegantly D.ethnically

高三英语单项填空中等难度题查看答案及解析

The picture of advertisement was well taken while its ______was badly written.

A. content       B. report         C. text     D. article

高三英语单项填空中等难度题查看答案及解析

Although it has been revealed in recent years that plants are capable of seeing, hearing and smelling, they are still usually thought of as silent. But now, for the first time, they have been recorded making ultrasonic (超声的) cries when stressed, which researchers say could open up a new field of precision agriculture where farmers listen for water-starved crops.

Itzhak Khait and his colleagues at Tel Aviv University in Israel found that tomato and tobacco plants made cries at frequencies humans cannot hear when stressed by a lack of water or when their stem it cut.

Microphones placed 10 centimetres from the plants picked up sounds in the ultrasonic range of 20 to 100 kilohertz, which the team says insects and some mammals would be capable of hearing and responding to from as far as 5 metres away. A moth may decide against laying eggs on a plant that sounds water-stressed, the researchers suggest. Plants could even hear that other plants are short of water and react accordingly, they speculate (推断).

On average, drought-stressed tomato plants made 35 sounds an hour, while tobacco plants made 11. When plant stems were cut, tomato plants made an average of 25 sounds in the following hour, and tobacco plants 15. Unstressed plants produced fewer than one sound per hour, on average.

It is even possible to distinguish between the sounds to know what the stress is. The researchers trained a machine-learning model to recognize between the plants’ sounds and the wind, rain and other noises of the greenhouse, correctly identifying in most cases whether the stress was caused by dryness or a cut, based on the sound’s intensity and frequency. Water-hungry tobacco appears to make louder sounds than cut tobacco, for example.

Enabling farmers to listen for water-stressed plants could “open a new direction in the field of precision agriculture”, the researchers suggest. They add that such an ability will be increasingly important as climate change exposes more areas to drought.

“The suggestion that the sounds that drought-stressed plants make could be used in precision agriculture seems feasible (可行的) if it is not too costly to set up the recording in a field situation,” says Anne Visscher at the royal Botanic Gardens, Kew, in the UK.

She warns that the results can’t yet be broadened out to other stresses, such as salt or temperature, because these may not lead to sounds. In addition, there have been no experiments to show whether moths or any other animal can hear and respond to the sounds the plants make, so that idea remains based on guesses for now, she says.

1.The experiment by researchers at Tel Aviv University shows that________.

A.tomato plants cry more often than tobacco when hurt

B.plant sounds can be heard by plants quite far away

C.humans can hear water-hungry plants crying

D.moths like laying eggs on stressed plant

2.What is Anne Visscher’s attitude towards the finding of the experiment?

A.Disappointed B.Cautious. C.Appreciative. D.Optimistic.

3.Taking advantage of the new research finding,farmers can________.

A.harvest crops in time B.reduce greenhouse effects

C.diagnose plant condition faster D.detect and remove insects easily

4.Which of the following would be the best title for the passage?

A.Plants get stressed Just Like Us.

B.Sounds of Plants Detected Far Away.

C.Cries of plants break Farmers’Hearts

D.Plants scream in the presence of stress

高三英语阅读选择中等难度题查看答案及解析

—Are you content with the result of the exam?

—Not a little. I can’t have ______ one.

A.a worse B.a better C.the worse D.the better

高三英语单项填空简单题查看答案及解析

Last week, Education Secretary Arne Duncan declared war on paper textbooks. “Over the next few years,” he said in a speech at the National Press Club, “textbooks should be abandoned.” In their place would come a variety of digital-learning technologies, like e-readers and multi-media websites.

Such technologies certainly have their place. But Secretary Duncan is threatening to light a fire to a tried-and-true technology—good old paper—that has been the foundation for one of the great educational systems on the planet. And while e-readers and multi-media websites may seem appealing, the idea of replacing an effective learning platform with a widely hyped (炒作) but still unproven one is extremely dangerous.

An expert on reading, Maryanne Wolf, has recently begun studying the effects of digital reading on learning, and so far the results are mixed. She worries that Internet reading, in particular, could be such a source of distractions(分散注意力) for students that they may cancel out most other potential benefits of a Web-linked, e-learning environment and while it's true that the high-tech industry has sponsored substantial amounts of research on the potential benefits of Web-based learning, not enough time has passed for longitudinal(纵向的) studies to demonstrate the full effects.

In addition, digital-reading advocates claim that lightweight e-books benefit students' backs and save schools money. But the rolling backpack seems to have solved the weight problem, and the shocking costs to outfit every student with an e-reader, provide technical support and pay for regular software updates promise to make the e-textbook a very pricey choice.

As both a teacher who uses paper textbooks and a student of urban history, I can't help but wonder what parallels exist between my own field and this sudden, wholesale abandonment of the technology of paper.

1.Which of the following statements is TRUE according to the passage?

A.Multi-media websites and good old paper are kinds of digital-learning technologies.

B.Digital learning technologies will replace the paper textbooks sooner or later.

C.E-readers and multi-media websites are learning methods that are proved effective.

D.A tried-and-true technology is paper textbooks, long used in educational system.

2.What is the drawback of paper textbooks according to the passage?

A.Their weight. B.Their price.

C.Their content. D.Their appearance.

3.What worries Maryanne Wolf is that ________.

A.paper learning can provide more potential benefits

B.students may not focus on learning by digital reading

C.digital reading can't provide potential benefits for users

D.the results of digital reading effects are understandable

4.What is the author's attitude towards digital-learning?

A.Disapproving. B.Supportive.

C.Positive. D.Objective.

高三英语阅读选择困难题查看答案及解析

Do be careful while crossing the street. If not you may get _______ by a

passing car.

高三英语单项填空简单题查看答案及解析

Ahead of World No Tobacco Day (31 May), the World Health Organization (WHO) is highlighting the damage tobacco causes to lung health: over 40% of all tobacco-related deaths are from lung diseases like cancer, chronic respiratory (慢性呼吸道) diseases and tuberculosis (肺结核). 1.

WHO Director — General Dr Tedros Adhanom Ghebreyesus said, “Every year, tobacco kills at least 8 million people. 2. Healthy lungs are essential to living a healthy life. Today — and everyday — you can protect your lungs and those of your friends and family by saying no to tobacco.”

In 2017, tobacco killed 3.3 million users and people exposed to second-hand smoke from lung-related conditions, including:

● 1.5 million people dying from chronic respiratory diseases

● 1.2 million deaths from cancer

● 600,000 deaths from respiratory infections and tuberculosis

3. Those who live on into adulthood are more likely to develop chronic obstructive pulmonary disease (COPD) later in life.

4..

WHO is urging countries to fight the tobacco epidemic (流行) through full

implementation of the WHO Framework Corrvention (公约) on Tobacco Control (WHO FCTC) and enforcing effective tobacco control actions, including WHO’s recommended “MPOWER” policy measures, for example by reducing demand for tobacco through taxation, creating smoke-free places and cessation support.

5. They are responsible for safeguarding the health of their families and communities by informing them of and protecting them from the harms caused by tobacco.

A. What can be done?

B. Don’t let tobacco take your breath away!

C. The Organization also encourages parents and community leaders to take steps.

D. Though smoke may be invisible and scentless, it can linger in the air for up to five hours.

E. WHO is calling on countries to increase action to protect people from exposure to tobacco.

F. Millions more live with lung cancer, tuberculosis or chronic lung disease caused by tobacco.

G. More than 60,000 children aged under 5 die of lower respiratory infections caused by second-hand smoke.

高三英语七选五中等难度题查看答案及解析

Roughly the size of a soda can, sitting on a bookshelf, a relatively harmless gadget (小装置) may be turning friends away from your home. The elephant in your living room is your Internet-connected security camera, a device people are increasingly using for peace of mind in their homes. But few stop to think about the effect these devices may have on house guests. Should you tell your friends, for instance, that they’re being recorded while you all watch the big game together?

“It’s certainly new territory, especially as home security cameras become easier to fix,” says Lizzie Post, president of the Emily Post Institute, America’s foremost manners advisors. “I think it will be very interesting to see what etiquette (礼仪) emerges in terms of whether you tell people you have a camera or not, and whether guests have a right to ask that it be turned off, if it’s not a security issue.”

Post wants to make clear that she’s not talking about legal rights, but rather personal preferences. She also wants to explain that there are no right or wrong answers regarding manners on this front yet, because the technology is just now becoming mainstream. Besides, the Emily Post Institute doesn’t enforce manners.

When it comes to security cameras, Post says it’s a host’s responsibility to make sure guests feel comfortable within their home. “I am always a fan of being open and honest.” For instance, if the host casually acknowledges that there is a camera in the room by telling a story about it, that may be enough to provide an opening for a guest to say if they are uncomfortable.

However, if a contractor (承包商) is working in your home, you don’t need to tell them that there are cameras watching. Then again, the air of responsibility that the camera generates can also work in contractors’ favor. “If anything does go wrong while they’re in the house, they don’t want to be blamed for it,” she says. “In fact, the camera could be the thing that proves that they didn’t steal the $20, or knock the vase off the table.”

1.For what reason may your friends feel unwilling to visit your home?

A.They don’t want their photos to be circulated on the Internet.

B.The security camera fixed may invade their privacy.

C.The security camera may turn out to be harmful to their health.

D.They may not be willing to interact with your family members.

2.What does Lizzie Post say is new territory?

A.Etiquette around home security cameras.

B.The effect of manners advice on the public.

C.Cost of applying new technologies at home.

D.The increasing use of home security devices.

3.What is Lizzie Post mainly discussing regarding the use of home security cameras?

A.Moral standards and immoral issues.

B.Likes and dislikes of individuals.

C.Legal rights and duties of guests.

D.The possible impact on manners.

4.In what way can the home security camera benefit visitors to your home?

A.It can satisfy their curiosity.

B.It can help them learn new technology.

C.It can make their visit more enjoyable.

D.It can prove their innocence.

高三英语阅读选择中等难度题查看答案及解析

Government should adopt laws that would ban advertising and other types of ______ of tobacco products.

A. delivery                       B. spread                     C. promotion                  D. discount

高三英语单项填空简单题查看答案及解析

.

Government should adopt laws that would ban advertising and other types of________of tobacco products.

高三英语单项填空简单题查看答案及解析