L 18: Finding Information from Multiple Sources

p. 333 Q 1 part A

What idea do "How We Speak" and "What Are Vocal Cords?" share?

• A Several parts of our bodies work together to let us speak.

• B We can make sounds because we have vocal folds.

• C Your mouth and tongue help you form vowels.

• D Air travels from lungs to the voice box.

Answer explanation

A is correct. Both passages say that people can speak because we have the following body parts: vocal cords, a throat, a tongue, a mouth, and lips.

B and C apply only to the second passage, "What Are Vocal Cords?"

D gives a detail that appears in "How We Speak" only.

p. 333 Q 1 Part B.

Choose ONE detail from "How We Speak" to support the answer in Part A.

• A. "Speaking is possible because we have special parts in our bodies: lungs, throat, voice box, tongue, and lips."

• B. "When we speak, we release air from our lungs."

• C. "The larynx, often called the voice box, contains vocal cords that stretch across the opening."

Answer explanation

A is correct. It supports the idea that vocal cords alone will not help us speak.

B mentions only the role that our lungs play in forming sounds.

C is about the larynx and vocal cords only; it does not explain how various body parts work together to create speech.

p. 333 Q 1 Part B.

Choose ONE detail from "What Are Vocal Cords" to support the answer in Part A.

• D. "Actually, vocal cords are vocal folds, or layers of tissue that vibrate in your larynx."

• E. "To make a high sound, we tighten the vocal cords."

• F. "What happens next is that we use our throat, tongue, mouth, and lips to shape the sound into vowels and consonants."

Answer explanation

F is correct. It supports the idea that vocal cords alone will not help us speak.

D is about the larynx and vocal cords only

E is about our ability to form sounds, not our ability to speak.

p. 333 Q 2. Which word in the paragraph below means "capable of bending easily without breaking."

(Spell it correctly in your answer for credit)

So why can't a dog speak? The big difference is the dog's anatomy, or the structure of its body. A dog's mouth is not as flexible as a human's. A dog can't move its mouth to make it smaller or roll its tongue in different positions. So after the air passes through the vocal cords, the dog can't change the sound very much.

Answer explanation

The word is flexible. The sentence after, "A dog can't move its mouth to make it smaller or roll its tongue in different positions," addresses the dog's inability to move its mouth into different positions.

p. 334 Q 3.

What information in "What Are Vocal Cords?" helps the reader understand why dogs can't speak, as stated in "Dogs and Birds: Making Noise"?

• A People can make higher sounds by tightening the vocal cords and lower sounds by relaxing the cords.

• B Even though we don't often think about how we say words and sentences, we don't learn to speak automatically.

• C People move their mouths to form words from the sounds made by the vocal cords.

• D The vocal cords of humans are not like the strings on a guitar because they have a V-shape.

Answer explanation

C is correct. It supports the idea that dogs can't speak because they can't move their mouths to form words, as people can.

A is about forming sounds, not forming words.

B does not relate to the reason why dogs can't form words.

D doesn't show a difference between humans and dogs. Like humans, dogs have vocal cords.