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中小学教育资源及组卷应用平台
Unit 2 Amazing Plants分层作业（基础层+提高层+拓展层）
基础层（夯实基础，适合全体学生）
一、根据中文提示写单词（每小题1分，共5分）
部分；器官 ____________
根；根茎 ____________
茎；干 ____________
种子 ____________
土壤 ____________
二、用所给单词的适当形式填空（每小题2分，共10分）
Roots ______ (take) in water and nutrients from the soil.
Seeds can ______ (travel) to far places in many ways.
The bean seed ______ (begin) to grow when it gets enough water.
Leaves ______ (make) food for the plant with sunlight.
The stem ______ (grow) taller little by little.
三、单项选择（每小题2分，共10分）
A plant has different parts ______ roots, stems and leaves.
A. such as B. for example C. because of
______ do roots do They keep the plant in the ground.
A. What B. How C. Where
Seeds need soil, water and sunlight ______ into plants.
A. grow B. to grow C. growing
Some seeds travel ______ wind because they are light.
A. in B. with C. on
The fruit of the plant can ______ the seeds.
A. protect B. carry C. make
四、根据短文内容判断正（T）误（F）（每小题2分，共10分）
Seeds are great travellers. They have no feet, but they can go to many places. Some seeds are small and light, so wind can carry them. Some seeds stick to animals' fur and travel with them. Some seeds fall into the water and go to new places. Some seeds have thick coats. When they grow, the coats break open.
Seeds can travel to many places because they have feet. ( )
Light seeds can travel with wind. ( )
Some seeds travel by sticking to animals. ( )
Seeds near the sea travel with wind. ( )
Seeds with thick coats break their coats when growing. ( )
提高层（深化理解，适合中等水平学生）
一、英汉互译（每小题2分，共10分）
take in ____________
grow out of ____________
little by little ____________
植物的生长 ____________
保护种子 ____________
二、句型转换（每小题3分，共15分）
Roots take in water from the soil.（改为一般疑问句）
Leaves make food for the plant.（对划线部分提问）
Seeds can travel in many ways.（改为否定句）
The stem helps the plant stand up.（改为同义句）
A bean seed needs sunlight to grow.（对划线部分提问）
三、阅读理解（每小题2分，共10分）
A bean seed's growth is interesting. First, it needs soil, water and warmth. Then a small root comes out and goes down into the soil to take in water. Next, a stem comes up and grows out of the soil. It needs sunlight and air to make food. Little by little, the stem grows taller. After some time, flowers bloom. Bees help the flowers make seeds. When the flowers fall, bean pods appear with new seeds inside.
What does a bean seed need first to grow
A. Sunlight and air B. Soil, water and warmth C. Flowers and bees
What comes out of the bean seed first
A. A root B. A stem C. A flower
Why does the stem grow out of the soil
A. To take in water B. To get sunlight and air C. To stand up
Who helps the bean plant make seeds
A. Wind B. Water C. Bees
Where are the new bean seeds
A. In the flowers B. In the bean pods C. In the soil
四、书面表达（15分）
题目：The Growth of a Bean Seed
要求：
描述菜豆种子从发芽到结果的生长过程。
写出种子生长所需的条件。
不少于5句话，语法正确，语句通顺。
拓展层（综合运用，适合高水平学生）
一、用方框内单词的适当形式完成短文（每小题2分，共10分）
（take in, grow, protect, travel, make）
Plants are amazing. Seeds can ______ to many places in different ways. When a seed gets enough soil, water and sunlight, it begins to ______. The root goes down to ______ water from the soil. The stem grows up and helps the plant stand. Leaves ______ food for the plant. Flowers make seeds, and fruit can ______ the seeds. Every part of the plant works together to help it grow well.
二、阅读理解并回答问题（每小题3分，共15分）
Different parts of a plant have different roles. Roots keep the plant in the ground and take in water and nutrients. Stems carry water and food to other parts and help the plant stand up. Leaves use sunlight to make food for the plant. Flowers make seeds, and these seeds can grow into new plants. Fruit protects the seeds. Some fruit is delicious, and animals eat it, then carry the seeds to other places. Plants are important to nature, and all parts of plants are useful.
What do roots do for the plant
How do stems help the plant
What do leaves use to make food
What is the role of flowers
Why do animals eating fruit help plants
三、书面表达（25分）
题目：How Seeds Travel
要求：
详细介绍种子的多种传播方式。
说明每种传播方式的特点和原因。
表达对种子传播现象的感受。
不少于8句话，语法正确，逻辑清晰，语句通顺。
参考答案
基础层
一、根据中文提示写单词
part 2. root 3. stem 4. seed 5. soil
二、用所给单词的适当形式填空
take 2. travel 3. begins 4. make 5. grows
三、单项选择
A 2. A 3. B 4. B 5. A
四、判断正（T）误（F）
F 2. T 3. T 4. F 5. T
提高层
一、英汉互译
吸收 2. 从……长出 3. 逐渐地 4. the growth of a plant 5. protect seeds
二、句型转换
Do roots take in water from the soil
What do leaves do for the plant
Seeds can't travel in many ways.
The stem helps the plant to stand up.
What does a bean seed need to grow
三、阅读理解
B 2. A 3. B 4. C 5. B
四、书面表达（参考范文）
The Growth of a Bean Seed
The growth of a bean seed is wonderful. First, it is a small seed. It needs soil, water and warmth to grow. Then a little root comes out and goes into the soil. Next, a stem grows up and out of the soil. It needs sunlight and air to make food. Little by little, the stem becomes taller. After some time, flowers bloom on the plant. Finally, bean pods appear with new seeds inside. I think it's amazing to watch a seed grow into a plant.
拓展层
一、用方框内单词的适当形式完成短文
travel 2. grow 3. take in 4. make 5. protect
二、阅读理解并回答问题
They keep the plant in the ground and take in water and nutrients.
They carry water and food to other parts and help the plant stand up.
They use sunlight to make food.
Flowers make seeds that can grow into new plants.
Because animals carry the seeds to other places after eating the fruit.
三、书面表达（参考范文）
How Seeds Travel
Seeds are great travellers even though they have no feet. They can travel in many amazing ways. Some seeds are small and light, so wind can carry them easily to far places. Some seeds can stick to animals' fur or people's clothes, and travel with them. Seeds that live near the sea fall into the water and go to new places with the water. There are also seeds that travel by themselves—they have thick coats that break open when they grow. I think seed travel is really wonderful. It helps plants grow in different places and makes our world greener.

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