1. Considering a large sample of companies, economics experts Maria Guadalupe, Julie Wulf, and Raghuram Rajan assessed the number of managers and leaders from different departments who reported directly to a chief executive officer (CEO). According to the researchers, the findings suggest that across the years analyzed, there was a growing interest among CEOs in connecting with more departments in their companies.
Which choice best describes data from the graph that support the researchers’ conclusion?
A. The average numbers of managers and department leaders reporting directly to their CEO didn’t fluctuate from the 1991–1995 period to the 2001–2008 period.
B. The average number of managers reporting directly to their CEO was highest in the 1996–2001 period.
C. The average number of department leaders reporting directly to their CEO was greater than the average number of managers reporting directly to their CEO in each of the three periods studied.
D. The average number of department leaders reporting directly to their CEO rose over the three periods studied.
2. In 2012, engineer Aisha Khan noticed that traditional solar panels lost efficiency in dusty environments due to accumulated dirt blocking sunlight. To address this issue, Khan developed a self-cleaning solar panel using a transparent, conductive coating that repels dust particles when an electric current is applied. This innovation not only maintains the panels' efficiency but also reduces maintenance costs, making solar energy more accessible in arid regions.
Which choice best states the main purpose of the text?
A. To describe Aisha Khan's invention of a self-cleaning solar panel
B. To explain how dust affects solar panel efficiency
C. To highlight the cost of maintaining solar panels in arid regions
D. To discuss the properties of conductive coatings used in technology
3. The following text is adapted from a contemporary novel.
"Despite her reputation as a brilliant engineer, Elena was seldom seen in the company's spotlight. While others presented the team's achievements, she quietly worked behind the scenes, refining designs and solving complex problems that no one else could. Her colleagues often took credit for her innovations, but she didn't mind. For Elena, the true reward was in the elegance of a well-crafted solution, not in public
recognition."
According to the text, what is true about Elena's attitude toward her work?
A. She seeks public recognition for her engineering achievements.
B. She prefers to work quietly, focusing on solving complex problems.
C. She often presents the team's achievements to the company.
D. She is disheartened when colleagues take credit for her work.
4. The following text is adapted from a contemporary scientific study.
"In the remote forests of Southeast Asia, the recently discovered insect species
Luminex nocturnus exhibits a unique bioluminescent behavior. Entomologists Dr. Mei Chen and Dr. Carlos Alvarez conducted field observations and laboratory experiments to understand this phenomenon. They noted that
L. nocturnus emits light pulses in a specific pattern during the night, particularly in the presence of certain predatory bats. Further analysis revealed that these light emissions coincide with ultrasonic clicks produced by the bats. The researchers propose that the insects use their bioluminescence as a defensive mechanism, synchronizing their light pulses with the bats' echolocation to confuse or deter the predators."
Which observation, if confirmed, would best support the researchers' proposal?
A.
L. nocturnus also emits light pulses during mating rituals, independent of bat presence.
B. The light intensity of
L. nocturnus increases in the absence of moonlight, regardless of predators.
C. Predatory bats avoid areas with high concentrations of
L. nocturnus during peak bioluminescent activity.
D. Other nocturnal insects in the same habitat do not exhibit bioluminescence in response to bat echolocation.
5. Renowned climatologist Dr. Elena Martinez concedes that while she cannot specify exactly when drastic changes will occur, she ________ that global temperatures will continue to rise if current trends persist. Her assertion underscores the urgency of addressing climate change.
Which choice completes the text with the most logical and precise word or phrase?
A. denies
B. predicts
C. ignores
D. doubts
6. While researching a topic, a student has taken the following notes:
- The blue whale is the largest animal ever known to have existed.
- Blue whales can reach lengths of up to 30 meters (98 feet).
- The African elephant is the largest land animal currently living.
- African elephants can weigh up to 6,000 kilograms (13,227 pounds).
- Both animals are mammals and are known for their impressive sizes.
The student wants to compare the sizes of the blue whale and the African elephant. Which choice most effectively uses relevant information from the notes to accomplish this goal?
A. Both the blue whale and the African elephant are mammals known for their impressive sizes.
B. The African elephant, the largest land animal, can weigh up to 6,000 kilograms (13,227 pounds), while the blue whale, the largest animal ever, can reach lengths of up to 30 meters (98 feet).
C. The blue whale is larger than the African elephant, which is the largest land animal currently living.
D. African elephants can weigh up to 6,000 kilograms (13,227 pounds), making them significantly heavy land animals.
Ответы: 1. (D), 2. (A), 3. (B), 4. (C), 5. (B), 6. (B).