1 当在字典词条中发现两个都有时,一般选前面的一个。

2 查不到时注意同一单词的不同词性。

3 当英英找不到时---------查英汉转自环 球 网校edu24ol.com转自环 球 网校edu24ol.com转自环 球 网校edu24ol.com

 

第32课 押题与阅读小检验

 

第四部分阅读了解      08理工新增15(五星级文章)

第二篇:      Electric Backpack   c

第六篇:      Flying the Hyper1 Skies   c   

第七篇:      Sugar Power for Cell Phones    c

第十三篇:    Invisibility Ring     c

第十四篇:    Japanese Car Keeps Watch for Drunk Drivers    c

第十七篇:    A Sunshade for the Planet   c

第十八篇:    Thirst for Oil   c

第二十篇:    Explorer of the Extreme Deep   c

第二十一篇: Plant Gas     c

第三十三篇: Smart Window   b转自环 球 网校edu24ol.com转自环 球 网校edu24ol.com转自环 球 网校edu24ol.com

第三十五篇: Where Have All the Bees Gone?    b

第三十六篇: Listening Device Provides Landslide Early Warning   b

第四十八篇: ‘Hidden’ Species May Be Surprisingly Common    a

第四十九篇Why Humans Walk On Two Legs     a

第五十篇:    Black Hokes Trigger Stars to Self—Destruct   a

 

 

第三十五篇:

Where Have All the Bees Gone? (B)

(交流2007年用书理工类阅读了解第三十五篇:Single-parent Kids Do Best

 

Scientists who study insects have a real mystery on their hands. All across the country, honeybees are leaving their hives蜂巢and never returning. Researchers call this phenomenon colony-collapse1 disorder. According to surveys of beekeepers across the country, 25 to 40 percent of the honeybees in the United States have vanished from their hives since last fall. So far, no one can explain why.

Colony collapse is a serious concern because bees play an important role in the production of about one-third of the foods we eat. As they feed, honeybees spread pollen from flower to flower. Without this process, a plant can’t produce seeds or fruits.

Now, a group of scientists and beekeepers have teamed up to try to figure out what’s causing the alarming collapse of so many colonies. By sharing their expertise in honeybee behavior, health, and nutrition, team members hope to find out what’s contributing to the decline and to prevent bee disappearances in the future.

It could be that disease is causing the disappearance of the bees. To explore that possibility, Jay Evans, a researcher at the United States Department of Agriculture (USDA) Bee Research Laboratory2, examines bees taken from colonies that are collapsing. “We know what s healthy bee should look like on the inside, and we can look for physical signs of disease,” he says. And bees from collapsing colonies don’t look very healthy. “Their stomachs are worn down, compared to the stomachs of healthy bees,” Evans says. It may be that a parasite is damaging the bees’ digestive organs. Their immune systems may not be working as they should. Moreover, they have high levels of bacteria inside their bodies.

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