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The causal relation encoded in the paragraph in Task 2.2 (Page. 51) is not a cause and effect in the conventional sense, but more of a logical deduction. Read the paragraph. Decide whether the following statements are true or false. 1. Sentence 1 is the topic sentence.
1. Pigs roll in mud and cows graze on grass all day. 2. Genetically engineered seeds produce food that has been proven to cause cancer and other problems in lab animals. 3. Some farmers refuse to use any pesticides, herbicides, or genetically modified seeds. 4. There are confined animal feeding operations. 5. Conventional farmers use chemical fertilizers to make plants grow. 6. Organic or local food is more expensive than conventional food. 7. Food is irradiated to last longer. 8. Harmful chemicals seep into the ground, or run off into our waterways, poisoning our water.
【填空题】Task: Audio-visual Exercises AV Clip 11: How to Perform CPR？ AV 11 How to Perform CPR（心肺复苏） video.mp4 Watch the video clip three times and fill the blank with the information from the video clip. CPR stands for cardiopulmonary resuscitation. It’s a life saving medical procedure that is given to someone who is in cardiac arrest. It helps to pump blood around the person’s body when their heart can’t. a) Ways to do CPR mentioned in the video clip: 1. ______________________; 2. Conventional CPR which combines _____________________________. b) Steps to do CPR: 1. ________________________________. 2. ________________________________. 3. ________________________________. 4. ________________________________. 5. ________________________________. 6. ________________________________. 7. ________________________________.
A、Both prions and viruses contain some form and quantity of nucleic acid, either DNA, RNA, or both.
B、Both viruses and prions upon infection induce an antibody response in the host.
C、Both viruses and prions upon infection induce an inflammatory response in the host.
D、Conventional viruses are rapidly inactivated by ultraviolet light or heat, whereas prions are not.
E、Both viral and prion proteins
WILL E-READERS REPLACE THE CONVENTIONAL PAPER BOOK？
Kindles, Nooks and other e-readers are threatening the future of printed books. But reading itself may get a boost from the devices. For example, a study found that the kids felt better about reading after a course in which they used Amazon Kindles. The research is in the _International Journal of Applied Science and Technology._
For two months, 199 middle-school students in a reading improvement class in Texas had 15 to 25 minutes every day when they were free to read on the Kindle. In general, the students felt the device improved their reading ability. And they tended to enjoy using an e-reader.
They noted the ease of carrying multiple books in one device, and the feeling that reading was suddenly a high-tech 21st-century activity rather than a boring waste of time. And some low-level readers who might otherwise be embarrassed to be seen with a simple book liked keeping their peers in the dark about what title they were reading. In the old days, one had to use a fake book-cover to achieve that level of secrecy.
1. Amazon Kindles is a kind of e-books. {T; F}
2. The research done in the _International Journal of Applied Science and Technology_ has lasted for two years. {T; F}
3. The students felt e-books could not improve their reading ability. {T; F}
4. Many students tended to enjoy using an e-reader. {T; F}
5. Some low-level readers used to use fake book-covers to keep their peers in the dark. {T; F}
Organic food: Why？
1. Europeis now the biggest market for organic food in the world, expanding by 25percent a year over the past 10 years. So what is the attraction of organicfood for some people？ The really important. thing is that organic sounds more"natural". Eating organic is a way of defining oneself as natural,good, caring, different from the junk-food-eating masses.
2. Unlike conventionalfarming, the organic approach means farming with natural, rather than man-made,fertilisers and pesticides. Techniques such as crop rotation(轮种)improve soil qualityand help organic farmers compensate for the absence of man-made chemicals. As amethod of food produc- tion, organic is, however, inefficient in its use oflabour and land; there are severe limits to how much food can be produced.Also, the environmental benefits of not using artificial fertilisers are tinycom- pared with the amount of carbon dioxide emitted(排放)by transportingfood.
3. Organic farming is oftenclaimed to be safer than conventional farming. Yet studies into organic farmingworldwide continue to reject this claim. An extensive review by the UK FoodStandards Agen- cy found that there was no statistically significant differencebetween organic and conventional crops. Even where results indicated there wasevidence of a difference, the reviewers found no sign that these differenceswould have any noticeable effect on health.
4. The simplistic claimthat organic food is more nutritious than conventional food was always likelyto be misleading. Food is a natural product, and the health value of differentfoods will vary for a number of reasons, including freshness, the way the foodis cooked, the type of soil it is grown in, the amount of sunlight and raincrops have received, and so on. Likewise, the flavour of a carrot has less todo with whether it was fertilised with manure(粪便) or something out of a plastic sack than with thevariety of carrot and how long ago it was dug up. 5. The notion that organic food is saferthan "normal" food is also contradicted by the fact that many of ourmost common food are full of natural toxins(毒素). As one research expert says : "People thinkthat the more natural something is, the better it is for them. That is simplynot the case. In fact, it is the opposite that is true: the closer a plant isto its&39;natural state, the more likely it is that will poison you. Naturally,many plants do not want to be eaten, so we have spent 10,000 years developingagriculture and breeding out harmful traits from, crops. "
Paragraph l
Paragraph 2
Paragraph 3
Paragraph 4
Techniques of organic farming help
There is no convincing evidence to
The weather conditions during the growth of crops
The closer a plant is to its natural state, the less suitable it is to
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根据以下内容，回答下列各题。 Directions: This task is the same as Task 1. The 5 questions or unfinished statements are numbered 41through 45. Broadband technology is seen as the key to the new digital economy. In this rapidly changing world, media and technology information can be sent via phone calls and download like music, graphics, business information or films. The simpler the information, the smaller the package and the narrower the bandwidth needed to deliver it.Broadband is used for high speed Internet connections at a fixed monthly rate.. It turns an exciting telephonline into a high speed digital line capable of carrying data up to 40 times conventional modem speeds. Any download is available at the click of a mouse-there is no dial-up as there is with standard Internet Sery ice Providers. For home owners and families there are many advantages. One of the most important is simultaneous(同时的)access to both telephone lines and the Intemet. No walt and no delay. businessess , broadband can improve customer relations and provide direct access to corporate e-mails an For databases. Entire operations can go online. The function that broadband technology has on the new digital economy is __________
A.further
B.critical
C.costly
D.global
Task 2
Directions: This task is the same as Task 1. The 5 questions or unfinished statements are numbered 41 through 45.
Cambridge University provides opportunities for educational achievement which are probably unequalled. This is, above all, the place for students with inquiring minds who want to extend their mastery of an educational discipline. The admission standard is high—the great majority of entrants(入学者) have at least AAB grades at GCE A level(or the equivalent), but learning ability is the only quality they all share. Students at Cambridge come from a wide range of educational and social backgrounds. Whatever your background, you yourself have to make the decision to apply, and you, as all individuals, will be considered for admission.
At Cambridge, Open Days are arranged to help you to experience the atmosphere and see the facilities in a College. Admissions and teaching staff will be there to answer any questions about educational matters, your qualifications, life in a college and so on. This would be the moment to discuss your school courses, if they are in any way different from conventional academic A-levels. If you cannot come on an Open Day, an informal visit to a college can often be arranged, by contacting the Admissions Office well beforehand.
Cambridge graduates traditionally go into a very wide range of occupations. Usually over a quarter will continue with some further study, either for a higher degree or for a vocational(职业的) qualification.
The Cambridge University is the place ______.
A．where students can extend their mastery of a major
B．where students can learn a practical skill
C．where only the rich students can go for study
D．whose admission standard is low
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