The heart is a muscle about the size of a fist. It pumps blood through the body day and night. In an adult at rest, it beats about 60 to 100 times a minute. According to the passage, how big is the heart?
Giraffes are the tallest land animals. Their long necks help them reach leaves high in trees that other animals cannot reach. How do long necks help giraffes?
The skin is the largest organ of the body. It protects us from germs, helps keep our temperature steady and lets us feel touch, heat and pain. Which job of the skin is NOT mentioned in the passage?
Passage: “Sleep helps the body repair muscles, supports memory and helps control appetite. Adults who regularly sleep too little have a higher risk of several health problems.” Which is the best title for the passage?
Instructions for a blood pressure monitor: “Sit quietly for five minutes. Rest your arm on a table at heart level. Do not talk during the reading.” Which action would go against these instructions?
A recipe states: “For a softer cookie, bake for 8 minutes. For a crisper cookie, bake for 11 minutes.” What can you infer?
The author writes: “Our survey found that 9 out of 10 dentists recommend chewing gum.” The survey was paid for by a chewing gum company and asked only 10 dentists. Why should a reader be cautious about this claim?
“When the power went out, Grandpa calmly lit the candles, found the radio and told us stories about storms from his childhood.” Which word best describes Grandpa?
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