In autumn, many green ________ change to yell...

In autumn, many green ________ change to yellow, orange or red.

九年级英语单项填空困难题查看答案及解析

From red apples and yellow lemons to blueberries and green melons, fruit comes in many different colors. 1..

According to Lu Wei from the Chinese Academy of Sciences, fruit colors actually come from their different pigments（色素）.These pigments appear differently, depending on the fruit's environment. 2..

To find out how environment influences fruit colors, Chinese scientists studied more than 280 different fruit colors. They found that red fruit usually grow in cooler places. And instead of just growing in one place, you can find them growing in many places around the world. 3.. These fruits grow a lot in just one certain area. The scientists also found that the closer the fruit is to the equator（赤道）, the darker its color will be.

4.. Animals eat fruit and drop the seeds（种子）in other places later. This helps the fruit spread and grow in different places. Therefore, in order to attract animals, some fruit develop colors that are easy for animals to see.

However, animals see colors in a different way.5.. For example, birds can see red more easily than humans can. Therefore, there is more red fruit in areas where birds live. The lemurs（狐猴）of Madagascar are red-green color-blind. Many yellow fruit can be found there, as they can easily see this color.

阅读短文，把A~E五个句子填入文中空缺处，使短文内容完整。

A. Blue and purple fruit mostly grows in warm places.

B. Fruit needs to develop colors that are suited to animals' visual（视觉的）abilities.

C. Why do different kinds of fruit have so many colors?

D. Animals have also had an influence on fruit colors.

E. This causes the fruit to turn a certain color.

九年级英语补全短文5选5中等难度题查看答案及解析

They would rather___　　　　 colours like orange or yellow than blue or white.

A. use　　　　　　　　 B. to use

C. using　　　　　　　 D. uses

九年级英语单项填空中等难度题查看答案及解析

They would rather___colours like orange or yellow than blue or white.

A.use　　　　 B.to use

C.using　　　 D.uses

九年级英语单项填空简单题查看答案及解析

They would rather___ colours like orange or yellow than blue or white.

A. use　　　　 B. to use　　　　 C. using　　　　 D uses

九年级英语单项填空中等难度题查看答案及解析

They would rather___colours like orange or yellow than blue or white.

A.use　　　　 B.to use　　　　 C.using　　　　 D.uses

九年级英语单项填空中等难度题查看答案及解析

They would rather _______colors like orange or yellow than blue or white.

A. use　　　　　　　　　 B. to use

C. using　　　　　　　 D. uses

九年级英语单项填空中等难度题查看答案及解析

They would rather__________ colours like orange or yellow than blue or white.

A. use　　 B. to use　　 C. using　　 D. uses

九年级英语单选题中等难度题查看答案及解析

They would rather__________ colours like orange or yellow than blue or white.

A. use　　　　　　　 B. to use　　　　　　 C. using　　　　　 D. uses

九年级英语单项填空中等难度题查看答案及解析

In autumn when leaves _________yellow， they soon begin to fall down to the ground.

A. keep　　　　　　　 B. turn　　　　　　　　 C. stay

九年级英语单项填空简单题查看答案及解析