B. After each paragraph, underline the sentence that conveys the main idea. Then, put a tick(/) after the sentence you would choose as the paragraph's closing sentence.
1. We feel pain when we burn our fingers or prick other parts of our body with a pin or thorn. This is because almost every part of the body has many nerves in it. As soon as these nerves feel pain, they carry a message to the brain. This is a warning to you that some part of your body is in danger.
b. Nerves are good carriers of messages./
2. Your voice comes from a little box in your throat. This box is called the larynx. Two soft, thin sheets of tissue called vocal chords stretch across the box. When these change shape and vibrate, they produce sounds that make up your voice.
a. Our vocal chords are amazing in what they can do. /
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C. Complete the details about these passages and then identify their main idea.
1. Detail: A galaxy is a grouping of stars.
2. Detail: There are many other galaxies in outer.
3. Detail: It is a spiral - shaped galaxy.
4. Detail: The Milky Way looks like a milky white stripe in the sky.
5. Detail: One of the stars in the Milky Way is the Earth.
6. Detail: Scientists believe there are about 200 billion stars in it.
Main idea: The Milky Way is our galaxy.
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