Chapter 3: Mastery Test 7

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A. Skim each of the following paragraphs. Then, identify the idea that correctly states the topic. (Hint: one idea is too general to be the topic; another idea is too specific.)

This activity contains 5 questions.

1. ¹Often called the "forgotten nutrient," water is essential to life. ²Without it, you could live only about one week. ³About 65 to 70 percent of your body weight is made up of water in the form of blood, saliva, sweat, urine, cellular fluids, and digestive enzymes. ⁴In all these various forms, water helps transport nutrients, remove wastes, and regulate body temperature.

— Pruitt & Stein, Health Styles, 2nd ed., p. 107.

a. Water removes waste c. Water b. Water: essential to life

2. ¹Fear of skin cancer has given sun exposure a bad rap. ²However, a healthy body needs short daily doses of sunlight. ³Direct sunlight helps the body produce vitamin D, and vitamin D helps the body absorb calcium. ⁴Sunlight also stimulates the body to produce two important chemicals. ⁵One is serotonin, which helps stabilize your moods. ⁶The other is melatonin, which helps regulate your sleep cycle.

a. Sunlightb. Vitamin D c. Healthy benefits of sunlight

B. Read the following group of ideas and then answer the questions that follow.

a. Hemingway developed his style as a reporter for the Kansas City Star.
b. Hemingway used short sentences and active, simple language.
c. American novelist Ernest Hemingway developed a writing style that earned him the Nobel Prize in literature.

3. Statement (a) is

a. the main idea.b. a supporting detail.

4. Statement (b) is

a. the main idea.b. a supporting detail.

5. Statement (c) is

a. the main idea.b. a supporting detail.

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