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B．1.jpg)
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D．3.jpg)
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更多“The time that the CPU spends on a given program can be computed using all of the following”相关的问题
A、dream
B、disillusionment
C、enlightenment
D、radicalism
A、straight
B、vertical
C、zigzag
D、diagonal
Currently there are some 20,000 chemicals in use, but the scientists only have detailed information around 1,000 of them.To see the advantages of GM food you have only to consider the recent press revelation that the average lettuce receives eleven pesticide applications before it reaches the supermarket shelf.I’m sure chemicals and their role in disease will become a big issue in the 21st century as the population of the developed world worries increasingly about its health.
The reason GM food will not go away is that we need a three-fold increase in food production by the year 2050 to keep pace with the world’s predicted population growth to ten or eleven billion.It’s not just a question of more mouths to feed either.What is often forgotten is that all these extra people will take up space, reducing the overall land available for agriculture.
The world has 800 million hungry people.Until now, food supplies have been increased by improved varieties, pesticides and artificial fertilizers: the green revolution.Now we’re on the edge of a new one: a genetic revolution.
It may well be that in the long term it is the developing world that benefits most from GM food.It is true that for the next years or so GM crops may be too expensive.
6. According to the passage, food supplies have been increased by all the following except_____________.
A.pesticides
B.artificial fertilizers
C.improved varieties
D.transportation
7.How many chemicals are still less familiar to the scientists?()
A.20,000.
B.1,000
C.19,000
D.21,000.
8.Why will people prefer GM food in the future?()
A.Because it uses less pesticides.
B.Because it is much cheaper.
C.Because the production is increased.
D.Because it is organic food.
9.Which of the following is NOT true?()
A.By 2050, the world population will grow to ten or eleven billion.
B.In the 21st century, GM food will take the place of conventional food.
C.More and more people will reduce the overall land available for farming.
D.More and more people will consume more food and occupy more space.
10.The author’s attitude towards GM food is _______.
A.negative
B.positive
C.critical
D.uncertain
Attention customers! We guarantee that our sneakers have the best quality. In particular, they are durable enough to endure extreme weather conditions. If there are any defects in the material and workmanship, please send them back immediately with the original receipt and packaging. All our products can be exchanged within 100 days of the date of purchase. In addition, a full refund can be given if preferred. Please check the instructions below.
1. If you use your sneakers outdoors, they cannot be returned for sizing problems.
2. If damage is caused by your mistake, this warranty will not apply.
3. If damage takes place over 100 days past the date of purchase because of proven defect in the workmanship, you will be given 30% credit towards the purchase of a new pair.
S&S
Customer Service
475 Green Ave.
Princeton, NJ
Hi, I'm Eugene Lee. I'm writing you to return my sneakers purchased last week. Actually, I bought my sneakers on the Internet last Saturday. Seemingly they were really nice and strong, but the heels appeared to be cracked when I wore them today. Thus, I'm returning these sneakers with the original receipt. Sorry for not returning the box. I threw it away. I hope this will not have an effect on my refund.
I was very disappointed with your products because I had heard that your brand has a pretty good reputation. Anyway I would like to get a full refund, but if that's not possible, I would like to exchange this pair for another.
Eugene Lee
What is Mr. Lee doing with his sneakers purchased last week？
A．He is bringing them to the store.
B．He is putting them on the shelf.
C．He is washing them.
D．He is sending them back to the manufacturer.
Fill in the blanks with appropriate transitions from the bank. A. Although B. First of all C. For example D. Moreover E. In conclusion F. Another G. Therefore H. such as Gold, a precious metal, is prized for two important characteristics. 3_____________, gold has a lustrous beauty that is resistant to corrosion. 4____________, gold is suitable for jewelry, coins, an ornamental purposes. Gold never needs to be polished and will remain beautiful forever. 5____________, a Macedonian coin remains as untarnished today as the day it was made 25 centuries ago. 6____________ important characteristics of gold is its usefulness to industry and science. For many years, gold has been used in hundreds of industrial applications, 7____________ photography and dentistry. The most recent use of gold is in astronauts’ suits. Astronauts wear gold-plated heat shields for protection when astronauts go outside spaceships in space. 8____________, gold is treasured not only for its beauty but also for its utility.” 请输入第3题答案 （填序号即可）
A、conjunctions
B、adjectives
C、adverbs
D、prepositions
A、Use a complex noun phrase instead of an active verb to emphasize the process or effect.
B、When there is no simple answer, it can be effective to write the title as a question.
C、If you cannot show the logic clearly, or if you want to emphasize the conclusion/alternatives/methods in the title, you can use “:” to introduce a subtitle.
D、Abbreviations should be avoided except for some commonly recognized ones.
A、A thesis should contain phrases like “in my opinion” or “I think”.
B、A thesis should be focused on a single idea.
C、A thesis can be worded as a question.
D、A thesis should not be worded in figurative language.
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