There are always many yellow leaves in autumn.In this season，we always see the beautiful show of leaves（1）changingchanging（ change ）colors.But did you ever （2）wonderwonder['w?nd?（r）] how and why this happens？
Leaves are nature's food factories.（3）PlantsPlants （plant） use sunlight to turn water and carbon dioxide into glucose （葡萄糖）.Glucose is（4）aakind of sugar.Inside a leaf，there are millions of little colored"bags".The green ones are chlorophyll（葉綠素）.The yellow ones are xanthophylls（葉黃素）.The orange ones are carotene（胡蘿卜素）.
In summer，chlorophyll is （5）busybusy['b?zi] making food for the trees.It （6）catchescatches（catch） sunlight to change water and carbon dioxide（二氧化碳）into glucose.There is so much chlorophyll （7）thatthatit covers up all the other colors in the leaves.
As summer ends and autumn comes，the days get shorter and shorter.Leaves get less sunlight，（8）sosothere is less chlorophyll working.The other colors in the leaves （9）comecome[k?m] out.The leaves don't really "turn" a certain color - they just lose（10）theirtheir（ they ） greenness.
Now you understand what makes the beautiful colors we enjoy during autumn.
【答案】changing；wonder；Plants；a；busy；catches；that；so；come；their
【解答】
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聲明：本試題解析著作權屬菁優(yōu)網所有，未經書面同意，不得復制發(fā)布。
發(fā)布：2024/6/27 10:35:59組卷：12引用：1難度：0.5
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（1）Who wrote this book review？BOOK CLUB：YOUR REVIEWS： 
What's the book about？
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My favourite character：My favourite character is Charlie because he is very kind.I don't like the other children because they are horrible! Title：Charlie and the Chocolate Factory Author：Roald Dahl 
My opinion of the book ：
This book is great!l love the incredible chocolates and sweets in the factory.Words to describe the book：
Interesting funny sad amazing magical excitingStar rating：
I give Charlie and the Chocolate Factory：
★★★★★
5 stars = Fantastic!
4 stars = Very good!
3 stars = OK
2 stars = Bad
1 star = Terrible!
Review by：Gabrielle （age 12）
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D．Terrible!
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