(2026·浙江温州期末)Corn is almost white or yellow, but some can be very colourful, such as Glass Gem Corn(玻璃宝石玉米) from North America. With really different colours, it looks like it is made of glass gems.
Where does it come from?
Carl Bames, a farmer from the US, collected ancient(古代的) corn seeds and crossbred(杂交) a few kinds of corn of different colours. From this, he got the first seeds of Glass Gem Corn. With each year of planting, the corn got brighter and more colourful.
Each kernel(粒) is a different corn plant, so it has genes(基因) from many corn family members. These different genes give Glass Gem Corn different colours. People don't know what the corn will look like before they grow it.
What does it taste like?
Glass Gem Corn is very hard to chew(咀嚼). People often use it to make popcorn or flour. Sometimes they put the corn out in the air for about a week. When it's dry, people can keep it for many years.
(
A.Why do people like growing it?
B.Where do its genes come from?
C.Why does it have different colours?
D.Where do people like growing it?
答案：C
Where does it come from?
Carl Bames, a farmer from the US, collected ancient(古代的) corn seeds and crossbred(杂交) a few kinds of corn of different colours. From this, he got the first seeds of Glass Gem Corn. With each year of planting, the corn got brighter and more colourful.
C
Each kernel(粒) is a different corn plant, so it has genes(基因) from many corn family members. These different genes give Glass Gem Corn different colours. People don't know what the corn will look like before they grow it.
What does it taste like?
Glass Gem Corn is very hard to chew(咀嚼). People often use it to make popcorn or flour. Sometimes they put the corn out in the air for about a week. When it's dry, people can keep it for many years.
(
C
)20. Which of the following can be put in “”?A.Why do people like growing it?
B.Where do its genes come from?
C.Why does it have different colours?
D.Where do people like growing it?
答案：C
答案：20. C
解析：
【分析】首先观察空格前后的内容：前文介绍玻璃宝石玉米的培育来源，后文说明玉米粒的基因差异赋予它不同颜色。需要找能衔接上下文的句子，即引出“颜色差异原因”的问句。
【解析】通读全文，空格后内容围绕“不同基因让玻璃宝石玉米有不同颜色”展开，说明空格处应提出与“颜色差异原因”相关的问题。选项A询问种植原因，选项B询问基因来源，选项D询问种植地点，均与后文内容无关；选项C“为什么它有不同的颜色？”能衔接前后文逻辑，符合语境。
【答案】C
【知识点】英语阅读理解、细节逻辑推断
【点评】本题考查对文章上下文逻辑的理解，需结合前后文内容推断缺失句子，是常见的阅读补全类题目，难度适中。
【难度系数】0.8
【解析】通读全文，空格后内容围绕“不同基因让玻璃宝石玉米有不同颜色”展开，说明空格处应提出与“颜色差异原因”相关的问题。选项A询问种植原因，选项B询问基因来源，选项D询问种植地点，均与后文内容无关；选项C“为什么它有不同的颜色？”能衔接前后文逻辑，符合语境。
【答案】C
【知识点】英语阅读理解、细节逻辑推断
【点评】本题考查对文章上下文逻辑的理解，需结合前后文内容推断缺失句子，是常见的阅读补全类题目，难度适中。
【难度系数】0.8