Using Dr Yuang's hybrid rice, nowadays farmer...

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Using Dr Yuang's hybrid rice, nowadays farmers are producing harvests ________ before.

A．as twice large as	B．twice as much as
C．twice as large as	D．as twice much as

高二英语单项填空中等难度题

少年，再来一题如何？

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Using Dr Yuang's hybrid rice, nowadays farmers are producing harvests ________ before.

A．as twice large as

B．twice as much as

C．twice as large as

D．as twice much as

高二英语单项填空中等难度题查看答案及解析
Dr Yuan Longping grows _____ is called super hybrid rice, _____ has a high output.
A. what; which　 B. that; what
C. that; which　　 D. what; that

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Scientists are carrying __1._____ experiments into using spiders’ cobweb to produce __2.____(extreme ) thin wire. The research　 _3.____( conduct) by researchers from Germany. They have developed __4.___process for reducing spiders’ silk _5.___about one twentieth of its normal diameter.
__6.___ is hoped that this new wire will be effective in the __7.____(grow) field of micro-electronics. They have collected data on the properties of spider silk. Their work has found evidence _8.____ the silk of the black widow spider would be the __9.____ (idea)material for the new “nanowires”. It seems even the deadly black widow can serve the cause __10.___ the scientific progress.

高二英语其他题中等难度题查看答案及解析
Nowadays, more and more people are using private cars, ________ has caused a lot of traffic problems, especially in large cites like Beijing and Shanghai.
A.　 that　　　　 B. which　　　　 C. it　　　 D. they

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任务型阅读（每小题1分, 满分10分）

Nowadays, more and more people are using email, but sometimes we use it too much or use it inappropriately. To get the most out of email we need to use it carefully and sensibly. These are some simple tips to help you make a better use of email.

It is good to have separate email accounts for separate purposes. For example, you may have one for business and one for social activities. This means you can check the personal email in the evening without having to think about business. If you see an important message from your boss, it could ruin your weekend or evening. After all, most people want to relax themselves and get away from work at the end of the day. Don't allow email to make you a slave to work. Some people feel it is inconvenient to check 2 different email accounts. But the relative inconvenience is easily outweighed by the benefits.

Many people ignore the title of an email. If the subject changes don’t keep using an old “re: irrelevant title.” A good title increases the chance that people will actually read your email rather than just leaving it for later. A bad title may even get deleted as spam.(垃圾邮件)

Emails can be brief and to the point. If the message has to be long, make sure it is broken up into different sections, which are easy to read. But, generally you should aim to keep it less than 5 sentences. This is good for both the writer and the reader.

If somebody sends some important documents, files or message, make sure you, at least, acknowledge their receipt(接收). Otherwise they may be uncertain that you’ve got them. It doesn't have to be long; it can be quite short.

If you find yourself sending similar answers to many people, write a draft message and save it in your drafts folder (or write it in Word). You can use this standard response for emailing many people. Don’t forget to personalize it by adding their names.

Having a signature looks professional and saves typing the same information. Remember people may wish to contact you through other ways. So make sure you have a phone number and address in your email. If relevant, add any qualifications and websites that you have. This gives people a chance to find out more about you.

Title	Some tips for using email
Use different email accounts for different 81	Even though you have to check different email accounts inconveniently, you can 82 your weekend or evening without worrying about your business.
Use a good title	Compared with a bad title, a good one makes it 83 for people to read the email.
Keep it 84	To be brief and to the point, your email should be written 85 five sentences, which does good to not only you but the reader.
Acknowledge important emails	Email 86 telling him / her you’ve received what was sent.
Create a standard response	If you need to send 87 answers to different people, create a standard response for emailing them, with their names 88 .
Compose your signature	You’d better send your 89 with your name as well as your other information so that others can get in 90 with you in other ways.

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根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。
Nowadays, more and more parents are using a new technology, home security systems, to keep an eye on their “home-alone” children. In the early days of home security, the systems were basically designed just to keep the bad guys out. ___1.___ But be sure, when no adult is present, he or she knows how to do so safely.
Every child should memorize his or her own full name and address, and home, work and cellphone numbers of each parent. ___2.___If your child is too young to memorize the information, he or she may be too young to be home alone — for any time.
____3._____If a door or window is slightly open, the child has any reason to suspect someone has been in the house that shouldn’t be, have him or her call you, then wait at the nearby home of a neighbour who’s agreed to act as a safe house...
____4.__Besides, set a rule that he or she must never play outside the house when no one else is at home.
Be sure your child knows how to disarm (解除) and arm your home security system. Program your control panel (控制板) to give you a message when your child enters or leaves the house, and arms or disarms the system. __5.____
If you want to learn more about home security systems that can help parents protect their “home-alone” children, you can visit www.ProtectAmerica.com.
A. Warn your home-alone child never to answer the doorbell or telephone.
B. You and your child should work together to use the home security systems.
C. At present, the systems are only intended for home-alone children.
D. Teach your child to observe things when returning to the house.
E. Also keep this information posted next to the phone at home.
F. Now, many parents are also using them to make their home-alone children safe.
G. If your child forgets to rearm the system, you can call him or her with a personal reminder.

高二英语七选五中等难度题查看答案及解析
In1964, Yuan Longping discovered a natural hybrid rice plant _______.Since then, he has spent all his life increasing the production of rice.
A.at ease B.by chance C.in turn D.on purpose

高二英语单项填空中等难度题查看答案及解析
Yuan Longping, known as the “father of hybrid rice”, doesn’t care about money or about ____ people call position.
A. that B. such C. what D. which

高二英语单项填空中等难度题查看答案及解析
Yuan Longping is a man who 1.w the land, does his research and grows hybrid rice. He is an agricultural 2.p . He 3.d his whole life to finding ways to increase the rice output without 4.e the area of fields. 5.T to his research, more people can be free from 6.h .Yuan is 7.s with his life. He enjoys 8.l to violin music. He cares little about his money and fame. He 9. t________ gives millions of yuan to 10. e_______ others for their research. He is a great person.

高二英语填空题简单题查看答案及解析
He started to work dilligently _____ he came up with the idea of hybrid rice for the first time in the 1960’s.
A. at once B. the moment C. for the moment D. in no time

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