How to protect children Web fans from unsuita...

How to protect children Web fans from unsuitable material on-line while encouraging them to use the Internet has long been discussed in the U. S.

For some parents, the Internet can seem like a jungle, filled with danger for their children. 1. With good guides, some education,and a few precautions(预防措施), the wilds of the Internet can be safely navigated(航行). “Kids have to be on-line. If we tell our kids they can’t have access (机会) to the Internet, we’re cutting them off from their future,” said an expert.

Most kids have started to use search engines. 2. There are search engines designed just for kids. A certain software contains only sites that have been selected as safe. 3. But this can’t be wholly reliable(可靠), and the best thing parents can do is to talk to their kids and let them know what is OK or not OK to see or do on the Internet.

4.

A few other tips

● Don’t put the PC in a child’s room but keep it in an area where mum or dad can keep an eye on things. That also makes the Internet more of a family activity.

● Ask your child what he or she has been doing and about any friends they make on-line.

● 5.

● And tell your children never to talk to anyone they meet on-line over the phone, send them anything, accept anything from them or agree to meet with them unless you go along.

A. The most popular way to limit access would be to use what is known as a “content screener(过滤器)”.

B. Many of them are great for finding tons of interesting Internet sites, and they can also locate places where you might not want your kids to go.

C. Tell your child not to give on-line strangers personal information, especially like address and phone number.

D. But jungles contain wonders as well as dangers.

E. Tell your child not to talk to any strangers.

F. Another way is that mum or dad is nearby when the child is surfing(浏览) the Internet.

G. And also parents can help the child in trouble.

高三英语七选五中等难度题查看答案及解析

Nowadays, many parents are trying to either prevent their children from failure, or protect them from the knowledge ______ they have failed.

A. when　　　　　　 B. where　　 C. what　　　　　　 D. that

高三英语单项填空中等难度题查看答案及解析

For more information on how to apply for scholarship, ______ our Web site at www.edu/scholarship.

A．visiting           B．to visit            C．visit              D．visits

高三英语单项填空中等难度题查看答案及解析

1.Why are you asked to declare quarantine items on arrival?

A. They could contain some drugs inside.

B. They can’t be carried into Australia free of charge.

C. They are often the cause of various crimes.

D. They may carry pests or diseases into Australia.

2.Which of the following items need you NOT declare if you have them in your  luggage?

A. A bottle of honey.                             B. Dried flowers.

C. A hair-drier.                                         D. Wooden chopsticks.

3.If you don’t declare quarantine items, ______.

A. you can probably get away with them

B. you will be discovered and punished

C. you can turn to the customs officers for help

D. you can give them away to a quarantine officer

4. Which of the following information can also be included in this notice?

A. Inspection equipment.                           B. Size of your luggage.

C. Examples of quarantine items.             D. Souvenirs you can buy here

高三英语阅读理解中等难度题查看答案及解析

How to Protect Yourself from Hackers Online

An increase in cyber-attacks (网络攻击) makes the Internet seem like a scary place these days. How can individuals protect or make it more difficult for hackers to access their information? Here are several tips that can help you protect against cyber-attacks:

1.

Hard passwords include upper and lower case letters, numbers and special characters. They should be at least eight characters in length. They should also not spell out words easy for hackers to find, like your pet's name or the name of a family member.

Change your password regularly

A very common mistake made by users is to create one hard password, but then never change it. Remembering a long list of complicated passwords can be difficult. But no password is unbreakable. Hackers are better able to hack multiple accounts if those accounts all have the same password. A password management service, like Dashlane or PasswordBox, can help you keep track of hard passwords. 2.

Clear your browser (浏览器) history

This goes for all the devices you use in a day – your home computer, your work computer, or your friend's iPad. Internet browsers like Firefox or Chrome keep track of where you've been and what you've done online. They keep records of every site you visited. 3. It is very easy for anyone who sees that information to steal a detailed record of your online activities.

Do not use free Wi-Fi

4. Often, a user does not need a password to connect to these wireless networks. These services might be useful, but they're also an easy way for hackers to access everything on your device.

Use anti-virus protection

There are many anti-virus services available for users. 5. Some anti-virus services are even free. They are a great way to have a professional help keeping users one step ahead of hackers.

A. Be careful while using thumb drive.

B. These services permit users to easily store and secure their passwords.

C. Make your password harder to hack.

D. They can offer many different types of computer protection.

E. An increasing number of public places now offer free wireless access to the Internet.

F. Information about what you sent from or saved on your computer can be kept for days or weeks.

G. Unless you really need it, it is best not to use it.

高三英语七选五中等难度题查看答案及解析

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.

1.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

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

A．tree barks　    B．cut­up leaves

C．grass cuttings　    D．plastic

3.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.

4.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

5.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

高三英语阅读理解中等难度题查看答案及解析

How to Put on a Medical Mask

Medical masks are mainly used by health care professionals to protect themselves and others. The masks can prevent the spread of infectious diseases. During a bad disease outbreak, that the public wear masks to protect themselves is also recommended. Here are some steps to wearing a mask properly.

Clean your hands. Before touching a clean medical mask, wash your hands thoroughly with both soap and water. Once you've applied soap, you should rub your hands together to wash them for at least 20 seconds. Always use a clean paper towel to dry your hands. 1.

Check the medical mask for imperfections. Once you've taken a new medical mask from the box, check it to ensure it doesn't contain any imperfections, holes or tears in the material. 2..

Orient(确定方向) the top of the mask properly. In order for the mask to fit as close to your skin as possible, the top portion of the mask will have a bendable, but stiff edge that can be shaped around your nose. Ensure this bendable side is facing upwards before applying the mask to your face.

3. The inside of most medical masks is white in colour, while the outside has a colour of some sort. Before applying the mask to your face, make sure the white side is facing towards your face.

Place the mask on your face. There are many types of medical masks available, each with different methods of attaching the mask to your head. 4. Pick up this type of mask by the loops(环), put one loop around one ear and then put the other loop around your other ear. If it is a mask with ties, pick up the mask by the upper ties, place the ties around the back of your head and attach them together with a bow.

5. Now that the medical mask is in place on your head and face, use your fingers to make the top edge of the mask around the bridge of your nose. If it is big enough, cover it over your chin.

A.Hold the mask in front of your face.

B.These masks are generally somewhat loose fitting.

C.Ensure the proper side of the mask faces outwards.

D.Adjust the nose piece and fit the mask to your face.

E.Don't forget to place that paper towel into a dustbin.

F.Some masks have 2 ear loops on either side of the mask.

G.If the mask has something wrong, throw it away and select another new mask from the box.

高三英语七选五中等难度题查看答案及解析

Summer is the perfect time to relax.As you plan for your trip,here are some tips on how to protect yourself. 1..

Fight against the mosquitoes in the hot spots.

There are many mosquito-borne illnesses in tropical regions,which are traditionally vacation hot spots. Therefore,mosquito repellent（驱蚊剂）that contains DEET should be an essential item in your travel bag.

2..

In lesser-developed countries there is less equipment for clean water and public health.If you can't avoid unhealthful water,make sure you bring along a tea or coffee—making pot that will boil water for you.You'd better buy a case or two of water and check that all bottle caps are sealed to assure the bottled water isn't just a refilled bottle of dirty tap water.

Always protect your feet.

It's best to wear slippers in the shower,but if you must be barefoot,put a towel down on the floor.3..You should never walk barefoot in any area of a foreign country,including your hotel room.

Be sure to eat safe fruits.

4..They may have been washed in the same water,or wiped with the same rag used to clean work surfaces in kitchens.The best advice is to bring your own peeler（削皮器）so that you know that something clean has been applied to the fruit.

Enjoy the smell of roadside stands,not the food.

Unless the food is piping hot when served,it's best to stay away from roadside stands,no matter how good the smell of the food might be.If you are concerned about whether a restaurant is clean,order the food to go.5..

A.Don't trust the local water

B.Any fruit served fresh may be polluted

C.Look out for any water not served in a bottle

D.The boxes may be cleaner than the plate or fork on the table

E.You should know how to keep yourself away from dirty fruits

F.They are necessary to avoid coming back with a major illness from your trip

G.Parasites（寄生虫）can enter the skin of your feet and travel to different parts of the body

高三英语七选五中等难度题查看答案及解析

How to best protect your important files? Should you rely on one of the many cloud services available today? The answer is “Yes”. Here's four reasons to invest in cloud storage.

1..

Cloud services-such as OneDrive, iCloud, Google Drive, and Dropbox-can protect your data from local threats, such as theft, fire, flood, nasty virus and hard drive failure.

2., he might take your hard drive, too, unless you store it elsewhere. A flood or fire could destroy both your computer and hard drive if kept in the same place.

Anywhere access.

With cloud services, you can access your backed-up stuff-such as documents or media- from virtually any Internet-connected computer, tablet or smartphone in the world. Most cloud services have free apps that make it easy to download or upload files from your mobile device. 3.

Sharing is super easy.

Cloud computing can also reduce over-crowding in someone's email box. Rather than try- ing to email several large photos or videos to a colleague, friend or family member, which can block up their email box, you can simply store them in the cloud and send a link to receivers to download the goods. 4.

Real-time cooperation.

5., cloud computing lets people work together on projects in real-time. For example, two or more employees can cooperate on a project together, instead of sending revisions back and forth to each other.

A.Sufficient storage

B.Remote protection

C.If someone steals your laptop

D.This is incredibly convenient for them and easy to do

E.Even though they're in different geographic locations

F.You need more space than what free cloud storage solutions offer

G.You can access your stuff anywhere as long as you can get online

高三英语七选五中等难度题查看答案及解析

How to protect your ears

You and your friends are leaving a concert on a Friday night. When you get outside, your ears are ringing. You have to shout to be heard. 1. So no harm done…right?

Not quite. Temporary buzzing may be easy to ignore, but repeated exposure to loud noise will eventually cause serious--- and irreversible(无法治愈的)--- hearing loss. A new study conducted by researchers at Brigham and Women’s Hospital in Boston shows that one in five people between the ages of 12 and 19 are experiencing slight hearing loss, and one in 20 have mild hearing loss. 2.But the good news is that there plenty of ways you can protect your ears from further damage — and still listen to the music you love:

Ask around. Put your earbuds in or your headphones on, and then ask a friend next to you whether or not he or she can hear what you’re listening to. 3.Turn it down.

Buy noise-canceling headphones. A pair of earbuds or headphones that fits comfortably will limit outside noise so that you can hear your music better at lower volumes.

Take breaks.　 4. So when listening to music, take your headphones off for 15 or 20 minutes and let your ears enjoy the quiet.

5.You can buy a cheap pair at any drugstore as an easy way to lower volume at concerts — or while playing or practicing your own music — without changing the quality of the sound.

A. Use earplugs.

B. Keep the volume below 70 percent.

C. If the answer is yes, your music is too loud.

D. But by morning, your hearing is totally back to normal.

E. Like every other part of your body, your ears need rest.

F. Unfortunately, there’s no way to get back hearing you’ve already lost.

G. The exposure to noise is louder and longer than in any previous generation.

高三英语七选五中等难度题查看答案及解析