【2015·安徽】AWelcometotheElectron-优题课

Eyesight problems are common among all ages and if they are left untreated, they can cause serious headaches or other problems. The good news is that most eyesight problems can easily be sorted out by wearing glasses.
Regular eye tests are important for everyone. Children and teenagers, under the age of 16 and up to the age of 19 for those full-time education, have the right to have eye tests for free in Britain. As the eye test is free, there’s no excuse for not having a regular eye test. Doctors suggest that it’s better to have an eye test about once a year.
Wearing glasses isn’t always regarded as all that cool and teens who suddenly need to wear glasses may find it difficult to accept. If they’ve grown up wearing glasses, then they may be more used to it. However, if your eyes are in poor health, not wearing glasses can put even more pressure on your eyes and could make them even worse.
Thankfully, the days of little choice of glasses frames (框架) for teenagers are gone and there’s now a wide selection of frames. If a teen does need to wear glasses, then it’s good to let him or her choose the type, as he or she will be able to choose something he or she feels comfortable. Don’t forget to be guided by the experts on glasses too.
According to the text, teens in the UK ______.

A．have few eyesight problems

B．can design their own glasses

C．change their glasses very often

D．can check their eyes without paying

How often do doctors suggest teens to have an eye test?

A．Once a month.	B．Once every six months.
C．Once a year.	D．Twice a year.

It can be learned from the text that teens ______.

A．find it difficult to buy comfortable glasses

B．prefer to wear cool glasses at an early age

C．are advised to wear glasses if their eyesight is poor

D．think they are much cooler when wearing glasses

In the past, teens who wanted to buy glasses ______.

A．were unable to find the right glasses

B．only had a few styles to choose from

C．could not find an expert to ask for advice

D．were worried about the quality of glasses

Twothirds of the world's major rivers have now been disrupted with more than 50,000 dams in an attempt to store water and provide power.In the US，there are more than 85,000 dams，disrupting large and small rivers，and in most cases transforming natural flow.The most famous of these，the Hoover Dam，constructed in the 1930s，is mainly responsible for the fact that the Colorado River no longer reaches the ocean.
Dams，besides all their attractive benefits，also have negative impacts.Creating a reservoir means a large area must be flooded.Communities may lose their land，houses and culturally important sites.
Environmentally，the new reservoir can be a paradise for wildlife，especially birds；however，it can cause greenhouse gas emissions and poison the water.Also，the dramatic rise and fall of water levels during dam releases is too extreme for plants and animals to cope with，resulting in dead zones around the shores of reservoirs.Fish that lay their eggs in the shallows，for example，may find a few hours later that those sites are high and dry.
Downstream(在下游方向)of a dam，the flow may be reduced so that farmers cannot irrigate their fields.Many rivers run through national borders，which may cause conflict over precious water.Disputes have been continuing between India and Pakistan，and Turkey，Syria and Iraq，for example.
Dams don't just block the flow of water.They also prevent fish migrations，and dams are a barrier to sediment(沉淀物)flows.Instead of rushing downriver，sediments get backed up against the dam wall，which causes the reservoir level to increase over time.However，sediments which are rich in nutrients have become a problem.The fertility of the entire system can be influenced，with soils lost during seasonal rains not being replaced.
Perhaps the biggest problem can be seen in deltas，which are sinking into the oceans.Groundwater is being extracted to feed the city，causing the city to sink，and sediments washed away by the ocean are no longer being replaced.The result is that sea level rises in cities from Shanghai to Alexandria.
The Hoover Dam is mentioned in the passage in order to show________.

A．dams play an important role in our life

B．dams have impacted the flow of the rivers

C．dams make people lose their land and houses

D．dams have many benefits as well as side effects

What effects does creating a reservoir have on people's life?
a．People will see fewer birds on the sides of the rivers.
b．Farmers will have less water to irrigate their fields.
c．Visitors can't visit some cultural relics any more.
d．More conflicts and wars over water will break out.
e．More kinds of fish will become extinct in future.

A．a，c	B．c，e
C．b，e	D．b，c

With many dams built across the rivers，fish ________.

A．will find more places to lay their eggs

B．will face a dangerous habitat

C．will be fed on more sediments rich in nutrients

D．will find it easier to deal with the rise of water

How can dams influence large cities like Shanghai?

A．Their entire system will be influenced.

B．The rainy season will last longer.

C．They will lie below sea level in future.

D．Rich soils will be washed away.

What does the passage mainly talk about?

A．Environmental loss of dams.

B．Cultural loss of dams.

C．Economic gain of dams.

D．Environmental benefits of dams.

Mulch is a protective cover of material that is spread on top of soil.It is usually made out of organic material, like crop waste.Farmers may keep the remains of maize or other crops on top of the soil.This creates mulch on the soil surface.The plant remains help protect the soil against wind and water damage.Mulching is one of the best things people can do for their plants.It also helps keep the soil from getting dry, and reduces the need for watering plants.It also limits temperature changes in the soil.And it stops unwanted plants, or weeds，from growing.
Organic mulch improves the condition of soil.As the mulch breaks down, it provides material which keeps the soil from getting hard.This improves the growth of roots and increases the movement of water through the soil.It also improves the ability of the soil to hold water. Organic mulch contains nutrients for plants.It also provides a good environment for earthworms and other helpful organisms in the soil.
It is easy to find organic mulch materials.Cutup leaves and small pieces of tree bark can be used.Grass cuttings are also a good mulch for plants. Mulch from newspapers works well in controlling weeds.
The best time to add mulch depends on your goal.Mulch provides a thick barrier between the soil and the air.This helps to reduce temperature changes in the soil. As a result，mulched soil will be cooler than other soil in the summer.In winter, the mulched soil may not freeze as deeply as other soil.The best time is after the ground has frozen, but before the coldest weather arrives.Spreading mulch before the ground has frozen may attract small animals searching for a warm place to spend the winter.Delaying the spreading should prevent this problem.The animals will probably find another place to live.
The author tells us the following EXCEPT________.

A．what mulch is and its benefits

B．the best time to add mulch

C．what can be mulched on the soil surface

D．the bad effects of mulch

The following can be used as organic materials to make mulch EXCEPT________.

A．tree barks	B．cutup leaves
C．grass cuttings	D．plastic

Which of the following is the benefit of mulch?

A．Protecting the soil against wind and water damage.

B．Keeping the soil wet and reducing the need for watering plants.

C．Reducing temperature changes in the soil and stopping unwanted weeds
growing.

D．All of the above.

The main idea of Paragraph 2 is that organic mulch can________.

A．improve the condition of soil

B．improve the ability of the soil to hold water

C．provide a good environment for earthworms

D．improve the growth of roots and increase the movement of water through the

soil
From the last paragraph, we know ________.

A．the best time to add mulch is in spring and summer

B．the best time to add mulch is after the coldest weather arrives

C．the best time to add mulch depends on weather

D．choosing the best time to add mulch can avoid attracting small animals

Steven Jobs was born on February 24,1955，in San Francisco，California，and was adopted by Paul and Clara Jobs.In 1961 the family moved to Mountain View, California.At that time people started to refer to the area as “Silicon Valley”．
As a child, Jobs preferred doing things by himself, not interested in team sports or other group activities.He enrolled in the HewlettPackard Explorer Club. There he saw his first computer at the age of twelve. He was very impressed, and knew right away that he wanted to work with computers.
At that time almost all computers were so large that one could fill a room, and so costly that individuals could not afford to buy them.Advances in electronics, however, meant that the parts of a computer were getting smaller and the power of the computer was increasing.
By 1980 the personal computer era was well underway.Apple was continually forced to improve its products to remain ahead, as more competitors entered the marketplace. Apple introduced the Apple Ⅲ， but the new model suffered technical and marketing problems.It was removed from the market.
Early in 1983 Jobs unveiled the Lisa.It did not sell well，however, because it was more expensive than personal computers sold by competitors.Apple's biggest competitor was International Business Machines (IBM). By 1983 it was estimated that Apple had lost half of its market share ( part of an industry's sales that a specific company has) to IBM.
In 1984 Apple introduced a revolutionary new model, the Macintosh.The Macintosh did not sell well to businesses，however.It lacked features other personal computers had, such as a corresponding high quality printer. The failure of the Macintosh signaled the beginning of Jobs's downfall at Apple.
Late in 1988 the NeXT computer was introduced, aimed at the educational market.The product was very userfriendly，and had a fast processing speed, excellent graphics displays，and an outstanding sound system.Despite the warm reception，however, the NeXT machine never caught on. It was too costly, had a blackandwhite screen, and could not be linked to other computers or run common software.
When did Steven Jobs first get the chance to catch sight of a computer?

A．In 1955.	B．In 1961.
C．In 1967.	D．In 1980.

Which of the following statements is RIGHT?

A．All the computes used to be large enough to fill a room.

B．Before 1980, Apple was not successful in the field of personal computers.

C．Steven Jobs was born in Silicon Valley.

D．Apple and IBM competed for sales of personal computers.

According to the passage, the Apple Ⅲ________.

A．was popular among the young people

B．turned out to be a failure

C．caused more competitors to come into the market

D．could be linked to a printer

Which of the following leads to Jobs's downfall at Apple?

A．The Apple Ⅲ.	B．The Macintosh
C．The NeXT.	D．The Lisa.

One of the reasons why the NeXT computer didn't become popular is that ________.

A．few people could afford it

B．it was not fast enough

C．it was not easy to use

D．it lacked super sound system

It's hardly surprising that weather is a favorite topic for so many people around the world—it affects where we choose to live, what we wear, our moods, and perhaps even our national characteristics.Studies have shown that changeable weather can make it difficult to concentrate, cloudy skies slow down reaction, and hot，dry winds make many people badtempered.
If you live in a place like Britain, where the weather seems to change daily if not hourly，you could be forgiven for thinking that the weather is random.In fact the weather is controlled by systems which move around areas of the globe.In the UK the weather depends on depressions (低压气流), often called lows，and anticyclones(反气旋)，also known as highs.These systems start in the Atlantic Ocean, and make their way across the British Isles from the west to the east.Highs bring sunny weather, while lows bring rain and wind.In modern times, human activities seem to be altering weather patterns.Gases produced by heavy industry change the temperature of the earth's surface，and affect cloud formation.Some researchers say that factories in Europe and North America may have been one of the causes of the droughts in Africa in the 1980s.
The human race has always tried to guess the weather，especially in areas of the world where there are frequent changes.Traditional rhymes point to early attempts to identify weather patterns; popular poems include：
Red sky at night, shepherd's delight；red sky in the morning, shepherd's warning.
Flies will swarm before a storm.
Rain before 7，clear by 11.
While folk wisdom can provide a guide to help forecast weather, today's methods of prediction increasingly rely on technology.Satellites, balloons，ships, aircrafts and weather centers with sensitive monitoring equipment, send data to computers.The data is then processed, and the weather is predicted.However，even this system cannot predict weather for longer than about a week.
When weather keeps changing，________.

A．people become badtempered

B．people's reaction slows down

C．people find it hard to focus on their work

D．people find it easy to focus on their work

The weather in Britain is________.

A．random	B．moist
C．depressing	D．satisfying

According to a traditional rhyme, if there is a red sky at night, the next day will be________.

A．windy	B．rainy
C．fine	D．snowy

Which of the following statements is TRUE?

A．Anticyclones often bring rain and wind.

B．Weather forecasting has been done for a long time.

C．Weather could never be predicted.

D．Modern methods of weather prediction are developed from folk wisdom.

What is mainly talked about in the second paragraph?

A．Changes in weather.

B．Weather in Britain.

C．African droughts.

D．Research on weather.

Electronic Village Program (Thursday, June 18, 2015)
Nearpod ❖9:00 am to 10:00 am ❖Room 501 Nearpod is a software program that creates a rich context (语境) for students to learn vocabulary. The presenter will show how to use it.	TEO ❖ 2:00 pm to 3:00 pm ❖Room 502 Our students come from different backgrounds but have the same desire to learn on-line. The presenter will use examples from his first on-line class to explain how any teacher can begin teaching on-line with TEO.
Kahoot ❖10:30 am to 11:30 am ❖ Room 601 Kahoot software can be used to create grammar tests which can be graded on a network. It can provide students with instant feedback (反馈), including reports about their strengths and weaknesses.	Prezi ❖3:30 pm to 4:20 pm ❖Room 602 Uses of Prezi in listening and speaking courses draw students' attention to speaking more fluently. The presenter will show how students can use Prezi to confidently present on a variety of topics, including introducing family, friends, and hobbies.

A．Nearpod.	B．Kahoot.
C．TEO.	D．Prezi.

A．9:00 am	B．10:30 am
C．2:00 pm	D．3:30 pm