30. Which of the following best expresses the main idea of the passage?
(A) Ebola outbreaks can be eliminated solely through medical treatment.
(B) International organizations should assume full responsibility for public health emergencies.
(C)
The current Ebola outbreak highlights the importance of coordinated action, adequate resources, and
community cooperation.
(D) Previous Ebola outbreaks offer little information that can be applied to current disease-control efforts.
Passage 2
CRISPR has transformed biological research by providing scientists with a highly precise method for modifying genetic
material. Although it is now widely associated with gene editing, the technology originated from a natural defense mechanism
found in certain microorganisms. By combining a guiding RNA molecule with specialized enzymes, researchers can locate and
alter specific DNA sequences with remarkable accuracy.
The technology has attracted considerable attention because of its medical applications. In recent years, CRISPR-based
therapies have received approval for treating some inherited blood disorders. Unlike traditional treatments that mainly reduce
symptoms, these therapies aim to correct the genetic abnormalities responsible for disease. Early clinical studies have reported
encouraging results, with many patients experiencing long-lasting improvements in health.
Beyond medicine, CRISPR has influenced several other fields. Researchers have applied it to agriculture to develop crops
that can better withstand environmental challenges. In addition, CRISPR-related tools have been adapted for early disease
detection, demonstrating value not only in treatment but also in diagnosis.
Nevertheless, the technology continues to generate ethical debate. Some scientists believe that gene editing could eventually
prevent serious inherited disorders before they develop. Others argue that altering human genetic material may create unforeseen
consequences and raise concerns about fairness and social inequality. As CRISPR technology advances, many experts emphasize
that scientific innovation should be accompanied by careful oversight and responsible regulation.