The second paragraph deals with the complex details of respiration. Carbon
dioxide is mentioned in lines 12 and 14–15.Both questions here can be answered simply by finding the appropriate part of the passage and reading carefully to get the details
straight. The answer to question 3 is in the first sentence. A person can survive “without food for as many as several weeks” (lines
2–3). In contrast, a person can live without water for only “several days” (line 2) and requires “a constant supply of oxygen” (line
5). Because a person can go longest without eating, you know that eating is the least essential of the functions mentioned. (A) is the
correct answer. Notice that the correct answer is clearly based on what is stated in the passage.
For question 4, you have to find the right spot to reread in the passage. Carbon dioxide is mentioned twice in the second paragraph.
The first reference is the one that lets you answer this question. Line 12 states that carbon dioxide is “produced by cells.” (K) is the
correct answer.
Inference
Inference means you’re looking for something that is strongly implied, but not stated explicitly. In other words, “inferencing” means
“reading between the lines.” What did the author almost say, but not say exactly?
Inferences will not stray too far from the language of the text. Wrong answers on Inference questions will often fall beyond the
subject matter of the passage.
A. eating
B. drinking
C. breathing
D. blood circulation
E. the oxygen supplyWhich part of an animal’s body is responsible for producing waste carbon
dioxide?4.F. the internal tissues
G. the circulatory systems
H. the tissue membranes
J. the bloodstream
K. the cellsChildren have an amazing talent for learning
vocabulary. Between the ages of one and seventeen,
the average person learns the meaning of about 80,000
words—about 14 per day. Dictionaries and traditional
( 5 ) classroom vocabulary lessons only account for part of
this spectacular knowledge growth. More influential
are individuals’ reading habits and their interaction
with people whose vocabularies are larger than their