阅读下面短文，根据其内容写一篇60词左右的内容概要。
Bees are important to the production of food we eat. Bees make honey, but they also pollinate (授粉)large areas of crops, such as straw berries, apples and onions. About a third of the food we eat is a result of pollination of the bees. Unfortunately, bees have been disappearing at an alarming rate.
In 2010, bee keepers started reporting about something called Colony Collapse Disaster (CCD).The main sign of CCD is the loss of adult honey bees from a hive(蜂巢). In October of 2010, some beekeepers reported that they had lost between 30 and 90 percent of their hives.
There were many theories for the disappearance of the bees. But the most convincing one has to do with pesticides and lifestyles of bees today. Nowadays, beekeepers get most of their income not from producing honey but from renting bees to pollinate plants. This means that the life of the typical bee now consists of travelling all around the country to pollinate crops as the seasons change. That means a lot of traveling on trucks, which is very stressful to bees. It is not unusual for up to 30% of the hive to die during transport due to stress. In addition, bees that spend most of their time locked up on trucks are not exposed to what they usually live on. Instead, they live on a sweet liquid from corn, usually polluted with pesticides.
The exact reason for the disappearance of bees is not sure, but losing bees is very costly to the economy. The bee pollination services are worth over $8 billion a year. With no bees, pollination will have to be done by hand, which would have effects on the quality of food and increased food priced. We hear a lot about big environmental disasters almost every day. But one of the biggest may just be the less of that tiny flying insect.
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书面表达
假定你是李华，与留学生朋友Bob约好一起去书店，因故不能赴约。请给他写封邮件，内容包括：
1.表示歉意；
2.说明原因；
3.另约时间。
注意：
1.词数100左右；
2.可以适当增加细节，以使行文连贯。
阅读下面材料，在空白处填入适当的内容(1个单词)或括号内单词的正确形式。
The university of Birmingham, UK, announces that it will accept the Gaokao exam for high-flying Chinese students 1.(wish) to join its undergraduate courses in 2019. High school students 2. complete the National Higher Education Entrance Examination, or Gaokao, with top grades can apply for direct entry into Birmingham degree programmes 3. first completing a foundation year.
Gaokao, which 4.(hold) across China in early June, is 5.(increase) accepted by universities in Australia, the USA, Canada and mainland Europe Birmingham will only be considering high quality students who achieve a minimum 80% Gaokao score and meet additional academic and English language 6.(require).
Professor Jon Frampton, Director of the University of Birmingham’s China Institute said, “I am 7.(delight) that the University is now accepting the Gaokao. This gives the 8.(bright) and best Chinese students. 9. opportunity to move straight into the first year of our undergraduate programmes and experience the benefits of studying at a 10.(globe) Top 100 university.
The carpets decorated with beautiful traditional patterns can often _______a high price on the international market.
A.obtain B.possess C.acquire D.fetch
—These little kids have learned perfect table manners, haven’t they?
—Yes. They are accustomed _________ at meals.
A.not to talk B.to not talk C.not to talking D.to not talking
He looked into her eyes and his voice ________ a more serious tone.
A.took off B.took on C.took in D.took up
