OAR FREE OAR Reading Comprehension Question and Answers 3

Question 1

Read the following: 'The Pacific tree frog can change its skin color from green to brown over the course of several hours.
Researchers believe this adaptation serves primarily as camouflage rather than temperature regulation, since the color changes correlate more strongly with background environment than with ambient temperature.' What evidence supports the researchers' conclusion?

Accepted Answer

Color changes align more with surroundings than with temperature shifts

Answer

The frogs change color very slowly

Answer

The frogs are found only in the Pacific region

Answer

The frogs prefer green environments over brown ones

Question 2

A passage reads: 'Between 1900 and 1950, the average life expectancy in the United States rose from 47 to 68 years. Most historians attribute this dramatic increase not to advances in treating diseases but to improvements in sanitation, clean water access, and public health infrastructure.' The passage suggests that:

Accepted Answer

Preventive public health measures were more impactful than curative medicine in extending life expectancy

Answer

Medical treatments had no effect on life expectancy during this period

Answer

Life expectancy stopped increasing after 1950

Answer

Sanitation improvements were the only factor in increased life expectancy

Question 3

Consider this excerpt: 'The company's quarterly earnings exceeded analyst expectations by 15%, yet its stock price dropped 3% the following day. Market observers noted that the company's forward guidance suggested slower growth in the coming year.' What explains the apparent contradiction described in the passage?

Accepted Answer

Investors reacted to projected future performance rather than current results

Answer

Analysts had set unrealistically low expectations

Answer

The stock market was experiencing a general downturn

Answer

The earnings report contained accounting errors

Question 4

Read the passage: 'Contrary to popular belief, medieval Europeans did not commonly believe the Earth was flat. Ancient Greek calculations of Earth's circumference were well known to educated medieval scholars, and navigational practices of the era relied on the assumption of a spherical Earth.' The author's tone in this passage is best described as:

Accepted Answer

Corrective, addressing a common misconception

Answer

Nostalgic for the medieval period

Answer

Highly critical of modern education

Answer

Indifferent to historical accuracy

Question 5

A passage states: 'The introduction of wolves into Yellowstone National Park in 1995 produced a cascade of ecological effects. Elk populations declined, which allowed overgrazed willows and aspens to recover. The regrown vegetation stabilized riverbanks, ultimately altering the physical course of streams.' This passage best illustrates which concept?

Accepted Answer

How a single species change can trigger widespread ecosystem effects

Answer

Natural selection among competing predators

Answer

The unpredictable nature of wildlife management

Answer

Why predator populations should always be controlled

Question 6

Read the following: 'Some economists argue that automation will create more jobs than it eliminates, pointing to historical precedents like the Industrial Revolution. Others counter that the pace and scope of artificial intelligence differ fundamentally from previous technological shifts, making historical comparisons unreliable.' Based on the passage, the two groups of economists primarily disagree about:

Accepted Answer

Whether historical patterns of technological change apply to modern AI

Answer

Whether the Industrial Revolution was beneficial

Answer

Whether automation has already eliminated jobs

Answer

Whether artificial intelligence qualifies as true automation