六、阅读理解
What do polar bears look like?
What do they eat?
• a small head
• a long neck
• a short tail
• short, round ears
Polar bears don't have图1 white fur in fact! Their fur is see-through and their hairs reflect(反射) all of the light around them, making their fur look white.
Polar bears are at the top of their food chain in the Arctic.
Algae
Plankton（浮游生物）
Krill
Arctic Cod（北极鳕鱼）
Leopard Seal
Polar Bear
Do you know these facts?
• Polar bears live on land.
• Polar bears live for 20—30 years.
• Polar bears have thick fat to keep themselves warm.
• Polar bears also have large feet to help pull themselves through the water.
()1. What is the text about?
A. Plants.
B. Animals.
C. Sport.
D. Languages.
()2. What do polar bears mainly eat?
A. Plankton.
B. Krill.
C. Arctic cod.
D. Leopard seals.
()3. What can we learn from the text?
A. Polar bears have white fur all over the body.
B. Polar bears have big heads and short tails.
C. Polar bears can keep themselves warm.
D. Polar bears can live for at least fifty years.

1. B 2. D 3. C

【分析】这是英语阅读理解题，需结合原文内容解答。第1题考查文章主旨，需通读全文判断核心内容；第2题考查食物链细节，需定位文中的食物链图找北极熊的食物；第3题考查细节理解，需逐一核对选项与原文表述是否一致。
【解析】
1. 通读全文，文章围绕北极熊（动物）展开，A（植物）、C（运动）、D（语言）均不符合，故选B。
2. 文中食物链为：Algae→Plankton→Krill→Arctic Cod→Leopard Seal→Polar Bear，北极熊处于食物链顶端，主要捕食豹海豹，故选D。
3. 选项A：原文提到“Polar bears don't have white fur in fact! Their fur is see-through...”，并非真的白色，错误；选项B：原文写“a small head”，不是大头，错误；选项C：原文提到“have thick fat to keep themselves warm”，正确；选项D：原文寿命是20—30年，不是至少50年，错误，故选C。
【答案】1.B 2.D 3.C
【知识点】英语阅读理解（主旨大意、细节理解）
【点评】本题为基础英语阅读理解题，侧重考查主旨把握和细节信息的查找与判断，只要仔细阅读原文、定位对应信息即可正确解答，难度较低。
【难度系数】0.3