What is the passage primarily about?

A. What we know about the Moon and its differences from Earth

B. A comparison of the Moon and Earth

C. The Moon’s effect on Earth

D. The origin of the Moon

Correct Answer: A
Rationale: The correct answer is A: 'What we know about the Moon and its differences from Earth.' The passage discusses various aspects of the Moon, including its origin, gravitational influence on Earth, physical characteristics, lack of atmosphere, and surface features. It provides insights into what humans know about the Moon and highlights its differences from Earth. Choice B is incorrect because while the passage does compare certain aspects of the Moon and Earth, it primarily focuses on the Moon itself rather than a direct comparison. Choice C is incorrect as the passage briefly mentions the Moon's effect on Earth in relation to tides but does not primarily focus on this aspect. Choice D is incorrect as the origin of the Moon is mentioned in the passage, but it is not the primary focus of the text.

What is implied by this paragraph about food and drink?

• A. We should eat and drink in reasonable quantities.
• B. Alcohol should be banned.
• C. People should eat in large quantities.
• D. We need stronger laws to control drunk drivers.

Correct Answer: A
Rationale: The paragraph emphasizes that while food and drink are necessary and desirable, their abuse can lead to serious physical and mental problems. It highlights the negative consequences of overeating and alcohol abuse, such as strain on the heart, diabetes, and other health issues. The text suggests the importance of moderation in consumption to prevent health problems. Choices B, C, and D are incorrect because the paragraph does not call for a ban on alcohol, promote eating in large quantities, or specifically discuss the need for stronger laws to control drunk drivers.

Based on this passage, what can the reader infer about the advice physicians will give their pregnant patients about coffee consumption?

• A. Almost all of them will advise women to stop drinking any caffeine until after the baby is born.
• B. The majority will ignore the study altogether and continue to advise caffeine in moderation as before.
• C. All of them will demand additional research be done before they change what they tell their patients.
• D. Some will continue to make their normal recommendations about caffeine, while others will be more cautious than before.

Correct Answer: D
Rationale: The passage implies that there is variability in physician responses to the study about caffeine consumption. Some doctors may continue their standard recommendations, while others might advise more caution based on the new evidence. Therefore, option D reflects this variability in professional opinions and is the correct inference.

What is the major difference between matter at the nanoscale and matter at larger scales such as millimeters or inches?

• A. At the nanoscale, metals are rigid, and at larger scales, they are bendable.
• B. Matter has different and special characteristics at the nanoscale.
• C. At the nanoscale, matter has different properties than matter at the atomic level.
• D. There is no difference.

Correct Answer: B
Rationale: The correct answer is B. Matter at the nanoscale exhibits unique and special characteristics that distinguish it from matter at larger scales. This can include properties like increased surface area, different melting points, altered conductivity, and enhanced reactivity. Choice A is incorrect as metals at the nanoscale can be more rigid compared to their larger scale counterparts. Choice C is incorrect because matter at the nanoscale has properties that are distinct from both atomic and larger scales. Choice D is incorrect as there are significant differences in how matter behaves and interacts at the nanoscale compared to larger scales.

A reader might infer from this passage that the organization ___________.

• A. succeeded in eradicating malaria
• B. has always been led by a medical doctor
• C. no longer studies communicable diseases
• D. changed its name to match its mission

Correct Answer: D
Rationale: The passage never says whether or not the CDC succeeded in its original mission (choice A) or whether it continued to be led by doctors (choice B). Inferring either of those things would be a leap unsupported by the text. Choice C is countered by information in the final