Walter offered us a lift when he was leaving the office, but our work ______, we didn’t accept the offer.
A. not being finished B. having not been finished
C. had not been finished D. not having finished
A Nepal plane crashed in bad weather, ________ all 18 on board.
A. killing B. killed
C. having killed B. to kill
---How is the man injured in the earthquake?
---The doctor said if _________ in a proper way, he was likely to be saved.
A. treated B. treating
C. is treated D. to be treated
________energy, we turn off the lights for Earth Hour on the last Saturday in March
A. Saving B. To save
C. Saved D. Having saved
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。选项中有两项是多余项。
1.less red meat and more fibre, less saturated fat (饱和脂肪) and more fruit and vegetables, right? Wrong, according to a controversial new book by nutritionist Zoe Harcombe. In the book, Harcombe charts her careful journey of research into studies that underpin (巩固) dietary advice—and her myth(误区)—breaking conclusions are surprising.
Myth2..
“Real fat is not bad for us,” says Harcombe. It’s man-made fats that we should be demonizing. Why do we have this idea that meat is full of saturated fat? In a 100g pork chop, there is 2.3g of unsaturated fat and 1.5g of saturated fat.
Myth: We should eat more fibre.
For three decades, we have eaten fibre into our bodies to help us feel full and keep our digestive systems moving. 3. , says Harcombe. The advice to eat more fibre is put forward along with the theory that we need to clean our digestive systems. But essential minerals are absorbed from food while it is in the intestines(肠道), so why do we want to wash everything out? Concentrate on not putting bad food in.
Myth: You need to eat five portions of fruit and vegetables a day. “Five-a-day is the most well-known piece of nutritional advice,” says Harcombe. “You’d think it was based on firm evidence of health benefit. 4. .” Five-a-day started as a marketing campaign by 25 fruit and vegetable companies and the American National Cancer Institute in 1991. There was no evidence for any cancer benefit.
Myth: Fruit and vegetables are the most nutritious things to eat.
Apparently not. Harcombe allows that vegetables are a great addition to the diet—if served in butter to deliver the fat-soluble(dissolved) vitamins they contain—but natural sugar in fruit, goes straight to the liver and is stored as fat.
5., says Harcombe, who adds, “Vitamins and minerals in animal foods—meat, fish, eggs and dairy products—beat those in fruit.”
A. Want to lose weight? Don’t trust these
B. We think we know what to eat
C. This is not a good idea
D. Fat is bad for us
E. Think again
F. We need to take more exercise
G Fruit is best avoided by those trying to lose weight
阅读理解。
Nowadays more and more people are talking about genetically modified foods ( GM foods). GM foods develop from genetically modified organisms (有机体), which have had specific changes introduced into their DNA by genetic engineering techniques. These techniques are much more precise where an organism is exposed to chemicals to create a non-specific but stable change. For many people, the high-tech production raises all kinds, of environmental, ethical(伦理的), health and safety problems. Particularly in countries with long farming traditions, the idea seems against nature.
In fact, GM foods are already very much a part of our lives. They were first put on the market in 1996. A third of the corn and more than half the cotton grown in the US last year was the product of biotechnology, according to the Department of Agriculture. More than 65 million acres of genetically modified crops will be planted in the US this year. The genetic genie is out of the bottle.
However, like any new product entering the food chain, GM foods must be subjected to careful testing. In wealthy countries, the debate about biotech is not so fierce by the fact that they have a large number of foods to choose from, and a supply that goes beyond the needs. In developing countries desperate to feed fast-growing and under fed populations, the matter is simpler and much more urgent: do the benefits of biotech outweigh the risks?
The statistics on population growth and hunger are disturbing. Last year the world’s population reached 6 billion. The UN states that nearly 800 million people around the world are unhealthy. About 400 million women of childbearing age don’t have enough iron, which means their babies are exposed to various birth defeats. As many as 100 million children suffer from vitamin A deficiency, a leading cause of blindness.
How can biotech help? Genetic engineering is widely used to produce plants and animals with better nutritional values. Biotechnologists have developed genetically modified rice and they are working on other kinds of nutritionally improved crops. Biotech can also improve farming productivity in places where food shortage are caused by crop damage attributable to drought, poor soil and crop viruses.
1.The passage mainly talks about _______.
A. the world’s food problem
B. the development in biotech
C. the genetically modified foods
D. the way to solve food shortage
2.According to the passage, GM foods ________.
A. will replace naturally grown foods
B. are far better than naturally grown foods
C. may help to solve the problem of poor nutrition
D. can cause serious trouble in developing countries
3.The underlined sentence “The genetic genie is out of the bottle.” in paragraph 2 probably means that _______.
A. GM foods are available everywhere
B. the technology in producing GM foods is advanced
C. genetic technology may have uncontrollable powers
D. genetic technology has come out of laboratories into markets
