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The History of Corn
Origin & Culture
• Corn came from a wild grass in Mexico.
• People changed it into corn over 4,700 years ago.
• Native Americans grew it, ate it and used it in ceremonies.
Spread around World
At first, Europeans didn't like corn because it was different from their usual food.
Soon, people found it easy to grow, so it became important in Europe and the US.
After World War Ⅱ, machines made farming faster and easier.
In the 1850s, there were too many kinds of corn. This made farmers hard to sell it.
People use corn to make some food for themselves as well as for animals.
Impact & Problems
• Corn made meat cheaper, but it also made people fat.
• Growing only corn hurt the land.
• 40% of corn is eaten and 60% of it is for industry(工业).
(
A. Science. B. History. C. Health. D. Travel.
(
A. China. B. Mexico. C. America. D. England.
(
A. People eat half of corn for food. B. Corn is a kind of unhealthy food.
C. Growing only corn is bad for land. D. It is difficult to grow corn in Europe.
Origin & Culture
• Corn came from a wild grass in Mexico.
• People changed it into corn over 4,700 years ago.
• Native Americans grew it, ate it and used it in ceremonies.
Spread around World
At first, Europeans didn't like corn because it was different from their usual food.
Soon, people found it easy to grow, so it became important in Europe and the US.
After World War Ⅱ, machines made farming faster and easier.
In the 1850s, there were too many kinds of corn. This made farmers hard to sell it.
People use corn to make some food for themselves as well as for animals.
Impact & Problems
• Corn made meat cheaper, but it also made people fat.
• Growing only corn hurt the land.
• 40% of corn is eaten and 60% of it is for industry(工业).
(
B
)16. In which part of a magazine can you find the text?A. Science. B. History. C. Health. D. Travel.
(
B
)17. Where did corn first come from?A. China. B. Mexico. C. America. D. England.
(
C
)18. Which of the following is TRUE according to the text?A. People eat half of corn for food. B. Corn is a kind of unhealthy food.
C. Growing only corn is bad for land. D. It is difficult to grow corn in Europe.
答案
16.B 17.B 18.C
解析
【分析】
解题思路：先通读全文明确文章主题为玉米的历史；针对各题目，第16题需结合文章核心内容判断其所属杂志板块；第17题是细节查找题，定位原文Origin部分找玉米起源地；第18题是细节判断题，需逐一将选项与原文对应内容核对，排除错误选项得出答案。
【解析】
16. 题干问文章可在杂志的哪个板块找到。文章标题为《The History of Corn》，内容围绕玉米的起源、传播、影响等历史相关信息展开，属于历史范畴，对应B选项（History）。A选项Science（科学）、C选项Health（健康）、D选项Travel（旅游）均不符合文章主题，故选B。
17. 题干问玉米最初来自哪里。定位原文Origin & Culture部分第一句“Corn came from a wild grass in Mexico”，可知玉米起源于墨西哥，对应B选项。A选项China、C选项America、D选项England均与原文不符，故选B。
18. 逐一分析选项：A选项“人们吃一半的玉米作为食物”，原文提到“40% of corn is eaten”，并非一半，错误；B选项“玉米是不健康的食物”，原文仅提到玉米让人们发胖，未说明玉米本身不健康，错误；C选项“只种植玉米对土地有害”，原文明确写“Growing only corn hurt the land”，与选项一致，正确；D选项“在欧洲种植玉米很难”，原文提到“it easy to grow”，说明种植容易，错误。故选C。
【答案】
16.B 17.B 18.C
【知识点】
英语阅读理解，细节理解，信息判断
【点评】
本题是一篇关于玉米历史的英语阅读理解题，主要考查学生快速定位原文信息、细节理解和选项判断的能力，题目以基础细节题为主，难度适中，学生认真阅读原文核对选项即可得出答案。
【难度系数】
0.7
解题思路：先通读全文明确文章主题为玉米的历史；针对各题目，第16题需结合文章核心内容判断其所属杂志板块；第17题是细节查找题，定位原文Origin部分找玉米起源地；第18题是细节判断题，需逐一将选项与原文对应内容核对，排除错误选项得出答案。
【解析】
16. 题干问文章可在杂志的哪个板块找到。文章标题为《The History of Corn》，内容围绕玉米的起源、传播、影响等历史相关信息展开，属于历史范畴，对应B选项（History）。A选项Science（科学）、C选项Health（健康）、D选项Travel（旅游）均不符合文章主题，故选B。
17. 题干问玉米最初来自哪里。定位原文Origin & Culture部分第一句“Corn came from a wild grass in Mexico”，可知玉米起源于墨西哥，对应B选项。A选项China、C选项America、D选项England均与原文不符，故选B。
18. 逐一分析选项：A选项“人们吃一半的玉米作为食物”，原文提到“40% of corn is eaten”，并非一半，错误；B选项“玉米是不健康的食物”，原文仅提到玉米让人们发胖，未说明玉米本身不健康，错误；C选项“只种植玉米对土地有害”，原文明确写“Growing only corn hurt the land”，与选项一致，正确；D选项“在欧洲种植玉米很难”，原文提到“it easy to grow”，说明种植容易，错误。故选C。
【答案】
16.B 17.B 18.C
【知识点】
英语阅读理解，细节理解，信息判断
【点评】
本题是一篇关于玉米历史的英语阅读理解题，主要考查学生快速定位原文信息、细节理解和选项判断的能力，题目以基础细节题为主，难度适中，学生认真阅读原文核对选项即可得出答案。
【难度系数】
0.7
B
Polar Bears in a Warming World
We use fuel for energy, but it is making the climate warmer. As a result, the ice melts, and the sea level rises. It is bad news for polar bears!
Polar bears live in the cold Arctic. The frozen Arctic is their home and the ice is their hunting ground. A polar bear usually stands on the sea ice to hunt for seals when they come up for air. But the ice has started to melt earlier each year. As the ice melts, some polar bears have lost their homes. Homeless polar bears have to move from ice to land earlier and stay on land longer. They starve because they can't find enough food.
These changes are a result of global warming. Global warming is making life difficult for polar bears. Their future is in our hands. We mustn't let them down. Let's save polar bears before it's too late.
(
A. Global warming is making our life difficult.
B. Using too much fuel can cause global warming.
C. Polar bears are in danger because of global warming.
D. The ice in Arctic melts earlier because of global warming.
(
A. They break the sea ice to find seals.
B. They wait on the ice for seals to appear.
C. They swim underwater to pull seals.
D. They produce special sounds to get seals.
(
A. Get sick.
B. Feel cold.
C. Lose home.
D. Become hungry.
(
A. To explain how the climate changes.
B. To introduce what global warming is.
C. To call for help to protect polar bears.
D. To invite people to travel to the Arctic.
Polar Bears in a Warming World
We use fuel for energy, but it is making the climate warmer. As a result, the ice melts, and the sea level rises. It is bad news for polar bears!
Polar bears live in the cold Arctic. The frozen Arctic is their home and the ice is their hunting ground. A polar bear usually stands on the sea ice to hunt for seals when they come up for air. But the ice has started to melt earlier each year. As the ice melts, some polar bears have lost their homes. Homeless polar bears have to move from ice to land earlier and stay on land longer. They starve because they can't find enough food.
These changes are a result of global warming. Global warming is making life difficult for polar bears. Their future is in our hands. We mustn't let them down. Let's save polar bears before it's too late.
(
C
)19. What is the main idea of the text?A. Global warming is making our life difficult.
B. Using too much fuel can cause global warming.
C. Polar bears are in danger because of global warming.
D. The ice in Arctic melts earlier because of global warming.
(
B
)20. How do polar bears hunt seals?A. They break the sea ice to find seals.
B. They wait on the ice for seals to appear.
C. They swim underwater to pull seals.
D. They produce special sounds to get seals.
(
D
)21. What does the underlined word "starve" in Paragraph 2 probably mean?A. Get sick.
B. Feel cold.
C. Lose home.
D. Become hungry.
(
C
)22. What is the writer's purpose of writing the text?A. To explain how the climate changes.
B. To introduce what global warming is.
C. To call for help to protect polar bears.
D. To invite people to travel to the Arctic.
答案
19.C 20.B 21.D 22.C
解析
【分析】
通读全文可知，文章围绕全球变暖导致北极冰融化、威胁北极熊生存展开，核心是呼吁保护北极熊。针对各题目：19题为主旨题，需概括全文核心，排除片面选项；20题为细节题，定位原文对应句子即可得出答案；21题为词义猜测题，结合上下文语境推断词义；22题为作者意图题，关注文末呼吁句即可明确目的。
【解析】
19. 主旨大意题：文章先说明全球变暖的成因，再阐述北极冰融化对北极熊的危害，最后呼吁保护北极熊，核心是北极熊因全球变暖陷入危机，A选项侧重人类生活、B选项侧重燃料与变暖的关系、D选项侧重冰融化的原因，均片面，故选C。
20. 细节理解题：根据第二段“A polar bear usually stands on the sea ice to hunt for seals when they come up for air”，可知北极熊在冰上等待海豹浮出，对应B选项，故选B。
21. 词义猜测题：前文提到北极熊“can't find enough food”，由此可推断starve意为“挨饿、变得饥饿”，A（生病）、B（寒冷）、C（失去家园）均不符合语境，故选D。
22. 作者意图题：文末“Let's save polar bears before it's too late”直接表明作者目的是呼吁保护北极熊，A（解释气候变化）、B（介绍全球变暖）、D（邀请去北极）均与主旨不符，故选C。
【答案】
19.C 20.B 21.D 22.C
【知识点】
英语阅读理解，主旨大意，细节理解，词义猜测
【点评】
本文以环保为主题，通过讲述全球变暖对北极熊生存的威胁，引导学生关注环境问题与动物保护，题型涵盖多种阅读考点，贴近生活实际，易于学生理解。
【难度系数】
0.7
通读全文可知，文章围绕全球变暖导致北极冰融化、威胁北极熊生存展开，核心是呼吁保护北极熊。针对各题目：19题为主旨题，需概括全文核心，排除片面选项；20题为细节题，定位原文对应句子即可得出答案；21题为词义猜测题，结合上下文语境推断词义；22题为作者意图题，关注文末呼吁句即可明确目的。
【解析】
19. 主旨大意题：文章先说明全球变暖的成因，再阐述北极冰融化对北极熊的危害，最后呼吁保护北极熊，核心是北极熊因全球变暖陷入危机，A选项侧重人类生活、B选项侧重燃料与变暖的关系、D选项侧重冰融化的原因，均片面，故选C。
20. 细节理解题：根据第二段“A polar bear usually stands on the sea ice to hunt for seals when they come up for air”，可知北极熊在冰上等待海豹浮出，对应B选项，故选B。
21. 词义猜测题：前文提到北极熊“can't find enough food”，由此可推断starve意为“挨饿、变得饥饿”，A（生病）、B（寒冷）、C（失去家园）均不符合语境，故选D。
22. 作者意图题：文末“Let's save polar bears before it's too late”直接表明作者目的是呼吁保护北极熊，A（解释气候变化）、B（介绍全球变暖）、D（邀请去北极）均与主旨不符，故选C。
【答案】
19.C 20.B 21.D 22.C
【知识点】
英语阅读理解，主旨大意，细节理解，词义猜测
【点评】
本文以环保为主题，通过讲述全球变暖对北极熊生存的威胁，引导学生关注环境问题与动物保护，题型涵盖多种阅读考点，贴近生活实际，易于学生理解。
【难度系数】
0.7
