Around the world, honeybee groups are dying in huge numbers: About one-third of nests collapse each year. For bees and the plants they pollinate (授粉) — as well as for beekeepers, farmers, honey lovers and everyone else who appreciates this marvelous social insect — this is a catastrophe.

Honeybee collapse has been particularly worrying because there is no one cause, but rather a thousand little cuts. The main elements include the mixed impact of pesticides (殺蟲(chóng)劑) applied to fields, as well as pesticides applied directly into nets to control bugs, pests and diseases; nutritional shortages caused by vast acreages of single-crop fields that lack diverse flowering plants; and commercial beekeeping itself, which destroys groups by moving most bees around the country multiple times each year to pollinate crops.

The real issue, though, is not the volume of problems, but the interactions among them. Here we find a major lesson from the bees that we ignore at our risk: the concept of synergy (協(xié)同作用), where one plus one equals three, or four, or more. A typical honeybee colony contains remains from more than 120 pesticides. Alone, each represents a benign dose (良性劑量). But together they form a poisonous soup of chemicals whose interplay (相互作用) can greatly reduce the effectiveness of bees’ immune systems, making them easier to suffer from diseases.

Observing the death of honeybees should warn us that our own well-being might be similarly threatened, and the widespread collapse of so many groups presents a clear message: We must demand that our regulatory authorities require studies on how exposure to low dosages of combined chemicals may affect human health before approving compounds.

Bees also provide some clues to how we may build a more collaborative relationship with the services that ecosystems can provide. Bees could offer some of the pollination service needed for agriculture. People discovered that crop harvests, and thus profits, are maximized if some cropland are left uncultivated for bees. Meanwhile a variety of wild plants means a healthier, more diverse bee population, which will then move to the planted fields next door in larger and more active numbers.

1.Which of the following is NOT the cause that leads to bees dying?

A. Lack of nutrition from enough diverse flowering plants.

B. The pests and diseases of the bees.

C. The beekeepers’ destroying without intention

D. The pesticides applied to crops.

2.By saying “one plus one equals three, or four, or more” in Paragraph 3, the author means that ____.

A. bees united mean they are much more powerful

B. bees united mean they are much more poisonous

C. pesticides mixed mean they are much more poisonous.

D. pesticides mixed mean they are much more effective.

3.The lesson people can learn from bees dying is that ____________.

A. medicine is as powerful as pesticide

B. our health might be threatened by pesticides

C. we should protect bees by reducing the usage of pesticides

D. medicine may be harmful to us when used together

4.What is the last paragraph mainly about?

A. Keeping a balance with nature is important

B. More plants mean more and healthier bees.

C. Bees are very important to agriculture.

D. Bees can bring in good higher profits to farmers

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Homestay UK/Great Britain

Here you will find a selection of homestay hosts and host families in the UK. If you want to learn more about the British host family of your choice, please click on information at www. Homestaybooking. Com. You will then see a personal introduction of the UK homestay host. If you don’t want to search yourself, just register for free and receive our matching recommendations.

Chika and Tara from London, the United Kingdom

Information about the homestay host

Chika is 28 years old. She is away from home most of the time. Tara is 18 years old. She is at home every day. They both speak English.

Chika and Tara’s guests can stay for at least 5 nights and up to a maximum of 365 nights. Chika and Tara have no children living at home. It is a non-smoking residence(住宅). No pets live in this household.

Information about the homestay accommodation

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￡17.00 per night(two guests)

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A. This kind of training can only have effects on people for a few years.

B. The people were trained during a period of ten years.

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D. The first group were trained how to remember word lists.

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A. Remember more words.

B. Understand information more quickly.

C. Act as poorly as before.

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A-Affect. B. Deny.

C. Prove. D. Improve.

4. Which of the following can be the best title for the passage?

A. Some Kinds of Mental Skills Naturally Decrease.

B. Mental Training Helped Elderly Stay Sharp for Years.

C. Four Groups of Old People Were Trained Mentally.

D. A Ten-year Research Affects Elderly.

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