In a small forest, there lived a little sparrow named Lulu. She was very small and weak. Every day, she tried to build a warm home, but the wind always blew her twigs (细枝) away. “I’m too small. I can never build a good home,” Lulu said sadly.

Nearby, there was a tall oak tree. He saw Lulu’s trouble and said gently, “Little sparrow, don’t give up. You may be small, but you have a strong heart. Let’s work together.” Lulu looked up at the big oak tree and shook her head. “You are so strong, but I’m not. I can’t help you at all,” she said.

The oak tree smiled. “You can help me keep the insects away. And I can protect you from the wind and rain. We need each other.” Lulu thought for a minute and agreed. Every morning, she flew around the oak tree and ate the insects that hurt the tree. The oak tree used his thick branches to shelter Lulu from the wind.

One day, a big storm came. The wind blew hard and the rain poured down. Lulu was scared, but the oak tree held her tightly with his branches. “Don’t be afraid. I’m here,” he said. After the storm, Lulu’s home was safe, and the oak tree was healthy too.

Lulu learned an important lesson: ___▲___. With hard work and cooperation (合作), we can do great things. From then on, she lived happily with the oak tree, and they helped each other every day.

1.1.Why did Lulu feel sad at first?

A She had no friend.

B She lost her wings.

C She was hurt by wind.

D She couldn’t build a home.

解析：选D。D细节理解题。文章第一段提到：“Every day, she tried to build a warm home, but the wind always blew her twigs away. ‘I’m too small. I can never build a good home,’ Lulu said sadly.” 这句话直接说明露露每天试图建房子，但树枝总是被风吹走，她觉得自己太小建不好，因此感到难过。故选D。

2.2. What can we know about the oak tree?

A He was weak.

B He was kind.

C He was lonely.

D He was lazy.

解析：选B。B推理判断题。文章第二段和第三段描写了橡树的言行。他看到Lulu的麻烦后，温柔地鼓励她“don’t give up”，并主动提出“Let’s work together”以及“I can protect you from the wind and rain”。 通过橡树主动帮助弱小的露露、鼓励她、保护她，可以推断出橡树是一棵善良的、乐于助人的树。故选B。

3.3.What did Lulu do to help the oak tree?

A She ate insects.

B She built a home.

C She protected him.

D She gave him twigs.

解析：选A。A细节理解题。文章第三段明确指出：“Every morning, she flew around the oak tree and ate the insects that hurt the tree.” 这句话清晰地说明了露露帮助橡树的方式是吃掉害虫。故选A。

4.4. How did the oak tree help Lulu in the storm?

A He gave her food.

B He held her tightly.

C He built a home.

D He drove insects away.

解析：选B。B细节理解题。文章第四段在描述暴风雨时提到：“...the oak tree held her tightly with his branches.” 原文直接用“held her tightly”描述了橡树在暴风雨中保护露露的具体动作。故选B。

5.5.Which sentence can be filled in the blank “___▲___”?

A Weak ones can do nothing.

B Only strong people can help others.

C No one is too small to be helpful.

D We can’t help others alone.

解析：选C。C推理判断题。文章最后一句点明了主题：“With hard work and cooperation, we can do great things.” 空格处的句子应该能够引出这个结论，并且概括露露学到的道理。露露一开始认为自己太小没用，但后来她发现自己能帮助橡树，这说明“没有人会因为太渺小而无法提供帮助”。故选C。