Most of the doctors in this hospital were born , and they are now.
A.in the 1970; in their fifties B.in 1970s; in the fiftieth
C.in the 1970s; in fiftieth D.in the 1970s; in their fifties
高三英语单项填空简单题查看答案及解析
Our country is nearly years old. We'll celebrate its birthday on October 1, 2019 around the country.
A.seventy, seventy B.seventy, seventieth
C.seventieth, seventy D.seventieth, seventieth
高三英语单项填空简单题查看答案及解析
There are 24 solar terms in a year. Grain Rain often starts in April, the month of the year.
A.Third B.fourth C.fifth D.sixth
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Did you know that the earth is home to animals?
A.million B.millions C.million of D.millions of
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Two died of cold last winter.
A.hundreds old people B.hundred old people
C.hundreds old peoples D.hundred old peoples
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Shortly after the accident, two police were sent to the post to keep order.
A.dozen of B.dozens C.dozen D.dozens of
高三英语单项填空简单题查看答案及解析
cave that George has discovered in his life time is near the Alps.
A.The hundredth B.The hundred
C.Hundredth D.A hundredth
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Prevent Viruses From Infecting Your Computer
The number one way to prevent viruses from infecting your computer is to have an anti﹣virus software on your computer, which can detect and block viruses before they have a chance to cause any harm. 1. If it finds any viruses, it can separate them and delete them safely from your computer. Because there are new viruses that are created on an almost daily basis, your virus protection needs to be updated regularly.
2. This way if your computer should ever get hit by a virus, which corrupts some of your system. you will have a back up copy available. 3. This will allow you to restart your computer using an earlier configuration (配置)before you got infected by the virus. This method is not always reliable but it is something that you can try.
An important rule of thumb is do not open attachments in emails from people you do not know. You have no idea what those attachments might contain and no idea who sent them. You should also be careful about opening attachments from people you do know if you are not sure what the attachment is about. 4.
Downloading is a good way to catch a computer virus. It's like opening the door and saying "Come on in! " Yes, if your virus protection is updated, it will hopefully catch the virus. 5. When downloading, make sure the site you are downloading from is reliable with a lot of traffic. Stay away from unreliable sites that have few visitors.
A.Not all viruses act immediately.
B.But then again, it might not.
C.Operating without a firewall is risky anyway.
D.Attachments are a good way for viruses to sneak into your systems.
E.A good anti﹣virus program can scan any program, files, or documents.
F.Another good way is to make backup copies of important documents and files.
G.You can even set a system restore point anywhere from a week or a month earlier.
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For over a century, native Asian honeybees have been steadily pushed aside by the European species, which were introduced to China by beekeepers because the female workers are more focused on their job and produce more honey, which is also sweeter.
However, the European species also carries a number of deadly diseases that can damage the natural habitat. Some researchers calculate that up to 80 per cent of China's native honeybee population has been lost since the first European bee farm in the country was established in the late 19th century.
The sweeping expansion of Asia's European honeybee population causes an ecological crisis. After more than 70 million years of evolution, native Asian honeybees could pollinate(对……授粉)a wide range of plant species in the region. However, many Asian bee species across the region are now close to extinction, and that's a cause for concern as the flowers of many Asian plants are not recognised by European honeybees, which will cause fundamental changes in the ecological balance.
A solution put forward by bee scientists was to draw a border between European and Asian honeybees. In some parts of China, bee farms are not allowed to use the European species, giving the native bees some breathing space.
After years of decline, the Eastern honeybees are gaining a foothold, especially in mountains and warm, tropical areas. It is because they can deal with the real hardship of life. The Western honeybees. on the contrary, rely very much on the protection and care of humans. Without caretakers, they have little chance to survive in Asia, where hornets(大黄蜂)alone could wipe them out.
The decline of Asian honeybees was alarming because of their important role in the food chain. Fewer bees mean fewer plants, fewer plants less food and less food fewer humans. We must take positive, sustainable steps towards protecting China's Asian honeybees.
1.What made China's native honeybees endangered?
A.Overdevelopment of the land.
B.Introduction of European bees.
C.Pollution from cars and factories.
D.Lack of a variety of plant species.
2.What can be inferred about many Asian plants from the third paragraph?
A.They will not flower.
B.They might grow slowly.
C.They might not be pollinated.
D.They will harm the environment.
3.What is basically typical of China's honeybees?
A.Sociable.
B.Aggressive.
C.Productive.
D.Adaptable.
4.What is the author's purpose in writing this passage?
A.To analyse influence of European bees.
B.To urge protection of native Asian bees.
C.To suggest ways of limiting European bees.
D.To introduce comeback of native Asian bees.
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Welcome To Activities For This Summer
Black Creativity Family Day
Art meets science during the Museum of Science and Industry's annual "Black Creativity" programming. celebrating its 50th anniversary. The art exhibition, billed as the longest running showcase of African﹣American art in the nation, displays more than 100 works, some of them by student artists. Meanwhile, Innovation Studio workshops encourage visitors of all ages to design solutions to everyday challenges. Free general admission to Illinois students July 20﹣23.
How People Make Things
Think of it as one great factory tour, with a big DIY station to put what you've learned to work: That's the idea behind the new kid﹣oriented exhibit, "How People Make Things. " Find out how humans and machines work together to make everyday objects, from boxes to shoes to toys. Then kids can use tools to cut, shape and put together what they like. This activity comes to Naperville for a long visit, opening Jan. 20 and running through Sept. 6 at DuPage Children's Museum. $13.
Traditional Chinese Concert
Traditional Chinese music and theater take the spotlight at Symphony Center. Featured performers are the Shanghai Chinese Orchestra and the Zhejiang Shaoju Opera Theatre, taking the stage at 3 pm (Arrive early for preconcert activities, l:30﹣2:30. ) At Symphony Center, 220 S. Michigan Ave. $20﹣$80, or $99 for a family of four.
Meet Cartoonist Art Baltazar
Winner of dozens of Eisner Awards (the Pultizers of comic books), cartoonist and Chicago native Art Baltazar has a brand﹣new graphic novel to delight your middle schoolers. The clever "Drew & Jot: Dueling Doodles" tells the adventure of two fifth﹣grade boys who work together on a hero ﹣ and ﹣ criminal tale—but a younger sister's doodles might prove the most dangerous enemy of all! Meet Baltazar at 7 pm al Anderson's Bookshop. Free to attend July 22﹣24.
1.Which activity will you go to if you are interested in African-American art?
A.How People Make Things.
B.Black Creativity Family Day.
C.Traditional Chinese Concert.
D.Meet Cartoonist Art Baltazar.
2.What is special about How People Make Things?
A.It offers hands-on activities.
B.It lasts for about half a year.
C.It displays works by students.
D.It includes a $13 factory tour.
3.What kind of book is Drew & Jot: Dueling Doodles?
A.A folk tale.
B.A classic tale.
C.An adventure story.
D.A love story.
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