题目内容
He has been to this city several times; he________ got lost, ________he?
- A.mustn't ;has
- B.can't have; has
- C.mustn't; did
- D.can't; did
智趣暑假温故知新系列答案
英语小英雄天天默写系列答案
暑假作业安徽少年儿童出版社系列答案US bees operation keeping groups have been attacked seriously by so called Colony Collapse Disorder (蜂群衰竭失调)．Almost 1/2 of their worker bees have vanished during the past season．This disorder has also been reported in Israel, Europe and South America．Bees fly away from the hive and never return．Sometimes they are found dead; other times they are never foun
d．Many crops and trees depend on pollination--- by bees to help them grow．
A new report says a virus may be at least partly responsible for the disorder in honey bee colonies in the United States．This virus is called Israeli acute paralysis virus．It was first found in Israel in 2004．Lan Lipkin at Columbia University in New York and a team reported the new findings in Science Magazine．Doctor Lipkin says the virus may not be the only cause．He says it may work with other causes to produce the collapse disorder．
The team found the virus in colonies with the help of a map of honey bee genes that was published last year．They examined thirty colonies affected by the disorder．They found evidence of the virus in twenty-five of them, and in one healthy colony．The next step is further testing of healthy hives．
The researchers suggested that the United States may have imported the disorder in bees from Australia．They say the bees may 
carry the virus but not be affected．
The idea is that unlike many American bees, the ability of Australian bees to fight disease has not been hurt by the varroasis mite．This insect attacks honey bees, wh
ich could make the disorder more likely to affect a hive．Australian bee producers object to these suspicions．
And some researchers suspect that bee production in the United States is down mainly because of the weather．Honey bees gather nectar from flowers and trees．The sweet liquid gives them food and material to make honey．But cold weather this spring in the Midwest reduced the flow of nectar in many flowers．Many bees may have starved．Dry weather in areas of the country could also be playing apart．
Wayne Esaias is a NASA space agency scientist who keeps bees in his free time．He lives in central Maryland, where he has found that flowers are blooming a month earlier than they did in 1970, which may be partly responsible for the disorder. Wayne Esaias is organizing a group of beekeepers to document nectar flow around the country.
【小题1】What is the author’s attitude toward the cause of this disorder?
| A．Doubtful | B．Neutral | C．Supportive | D．Negative |
| A．presenting the effect and analyzing its causes |
| B．making comparisons between two countries |
| C．providing data and examples |
| D．following the time order |
| A．Three | B．Four | C．Five | D．Six |
| A．American bees are more likely to defend themselves against hurt from other insects than Australian ones |
B．A collection of plants production in the U.S may be influenced by  the bee disorder |
| C．Israeli acute paralysis virus should be responsible for the disorder |
| D．The solution to the disorder will be found eventually |
American beekeeping operations have been hit hard by what scientists call colony collapse disorder(C.C.D.). Almost half of their worker bees have disappeared during the past season. C.C.D. has also been reported in Israel, Europe and South America. Bees fly away from the hive and never return. Sometimes they are found dead; other times they are never found. Many crops and trees depend on pollination （授粉） by bees to help them grow.
A new report says virus may be at least partly responsible for the disorder in honey bee colonies in the United States. This virus is called Israeli acute paralysis virus. It was first identified in Israel in 2004. Ian Lipkin at Columbia University in New York and a team reported the new findings in Science magazine. Doctor Lipkin says the virus may not be the only cause. He says it may work with other causes to produce the collapse disorder.
The team found the virus in colonies with the help of a map of honey bee genes that was published last year. They examined thirty colonies affected by the disorder. They found evidence of the virus in twenty–five of them, and in one healthy colony. The next step is further testing of healthy hives.
The researchers suggested that the United States may have imported the disorder in bees from Australia. They say the bees may carry the virus but not be affected.
The idea is that unlike many American bees, the ability of Australian bees to fight disease has not been hurt by the varroa mite（全球性的蜂虱）. This insect attacks honey bees, which could make the disorder more likely to affect a hive. Australian bee producers reject these suspicions.
And some researchers suspect that bee production in the United States is down mainly because of the weather. Honey bees gather nectar（花蜜） from flowers and trees. The sweet liquid gives them food and material to make honey. But cold weather this spring in the Midwest reduced the flow of nectar in many flowers. Many bees may have starved. Dry weather in areas of the country could also be playing a part.
Wayne Esaias is a NASA space agency scientist who keeps bees in his free time. He lives in central Maryland, where he has found that flowers are blooming a month earlier than they did in 1970, which may be partly responsible for the disorder. Wayne Esaias is organizing a group of beekeepers to document nectar flow around the country.
【小题1】The researchers found the virus ______.
| A．with the help of colony collapse disorder |
| B．by researching the causes of bee death |
| C．with the help of a map of honey bee genes |
| D．with the help of a scientist of NASA |
| A．American beekeeping industry has been strongly influenced by the bee disorder. |
| B．Studies are being carried out on the causes of the bee disorder, but questions remain. |
| C．How the causes of the bee disorder in U.S have been found. |
| D．The bee production in U.S is down because of Israeli acute paralysis virus. |
| A．Three. | B．Four. | C．Five. | D．Six. |
| A．Israeli acute paralysis virus should be responsible for the disorder |
| B．the solution to the bee disorder will be found eventually |
| C．American bees are more likely to defend themselves than Australian bees |
| D．the crop and plant production in U.S may be influenced by the bee disorder |
The American book Who Moved My Cheese has bee a bestseller all over the world. It teaches people how to face changes in their lives. Now its author Spence Johnson has written a book just for teens. The book tells us that when facing change in our lives, like a new school or new friends, don't be afraid. Instead, use this change to make a better life. The book gives an example of a change at school. A school is changing from having two terms to three terms because there are too many students.
Several teens are talking about this. Most of them are unhappy and worried. But Chris is not. He laughs and tells a story about two mice, two “little people” and some cheese.
The four are in amaze looking for the cheese. Here, cheese means something important in life, like moving to a new class or getting into college. But they find the cheese is gone. The mice realize that they can’t change what has happened and have to find more cheese. This means finding different dreams. The little people, however, can’t do this. They are afraid of change so they find no cheese
After Chris finishes the story, the friends understand one thing: to get more cheese, move in a new direction quickly. His friends understand how this can be used in the changes all teens face, such as doing well at school or having good relationships or just feeling good about yourself.
【小题1】The book Who Moved My Cheese is __________.
| A．read across the world | B．written all over the world |
| C．sold only in America | D．loved only by teens |
| A．Never change in our life. | B．Change when you like to do. |
| C．Change with the changes. | D．Pay attention to the changes, |
| A．Mice and little people | B．Students | C．Cheese | D．Readers |
| A．Mice | B．Little people | C．Chris | D．Spence Johnson |
| A．The author is Britain. |
| B．There are three terms in every school. |
| C．Most teens don't understand Chris' story. |
| D．The book tells teens how to face changes in their lives. |