小喬

秋天到了，樹上的葉子呈現(xiàn)出了不同的色彩。秋風(fēng)吹拂，樹葉起舞，最終落在大地上，為自己一年來(lái)的工作畫上了完美的句號(hào)。葉子為什么會(huì)在秋天變紅或者變黃呢？它們又為何會(huì)落下呢？讓我們一起去聽老橡樹講述落葉的秘密吧。

In the City Park， there lives a wise old tree named Old Oak（老橡樹）. One day， a group of curious young trees gather around Old Oak， eager to learn. They notice that some of their leaves are changing colors and falling to the ground.

“Old Oak，” asks Maple（楓樹）， a young tree with red leaves， “why are our leaves changing colors？” Old Oak smiles and explains， “The colors are a sign that our leaves are getting ready to fall. As the days get shorter and the nights get longer， our leaves stop making chlorophyll（葉綠素）， which is what makes them green. Instead， the other colors that are always there， like red and yellow， start to show.”

Ginkgo（銀杏）， a tree with yellow leaves， speaks up， “But why do our leaves have to fall？” Old Oak answers， “Leaves are like our food factories（食品工廠）. They use sunlight and water to make food for us. In winter， there isnt enough sunlight and water for our leaves to keep making food， so our body saves energy by letting them go.”

“But what happens to our leaves when they fall？” Aspen（白楊）， a tree with golden leaves， chimes in（插話）. Old Oak chuckles（輕笑）， “Great question！ When our leaves fall， they create a blanket on the ground. This blanket helps keep the soil（泥土） warm and protects our roots（根） during the cold winter months. ”

“Its like natures way of giving us a warm hug！” The young trees are happy to know the secret of their falling leaves.

讀完了這個(gè)故事，你知道落葉的秘密了嗎？傳說(shuō)，在神秘的大森林里，精靈在落葉下面藏了寶藏，只有將正確的表達(dá)連在一起才能找到寶藏哦?？煊媚阍诠适吕飳W(xué)到的知識(shí)去尋寶吧！

Leaves turn red or yellow， because they stop to make chlorophyll.

Leaves turn red or yellow， because they stop making chlorophyll.

Leaves fall down，

because they stop making chlorophyll.

Leaves make

food for trees.

Leaves fall down，

because there is enough

sunlight.

Falling leaves

protect trees

from cold.

Falling leaves

protect trees

from hot.

Falling leaves

keep the soil

cold.

Falling leaves

keep the soil

hot.