Boundaries: แบบฝึกหัด

In 1912, the renowned scientist Marie Curie was awarded the Nobel Prize in Chemistry for her discovery of the elements radium and ________ she remains the only person to be honored with Nobel Prizes in two different scientific fields.

The expedition required several essential ________ heavy-duty boots, a portable GPS, and enough rations to last for two weeks in the wilderness.

The researchers analyzed soil samples collected from three distinct ________ the high-altitude Andes, the tropical Amazon basin, and the arid Atacama Desert.

The sun set behind the jagged ________ and a cool breeze began to blow across the quiet valley, signaling the end of a long day.

The conservation team faces a significant challenge in restoring the high-altitude wetlands ________ the delicate balance of the local peat soil is highly susceptible to erosion from increased foot traffic ________ and the introduction of non-native plant species has further complicated the ecosystem's recovery. The lead researcher noted that the restoration must be incremental to avoid causing further structural damage to the terrain.

Which punctuation pattern completes the boundaries of the sentence most logically?

The 19th-century naturalist Alexander von Humboldt pioneered the field of biogeography by observing how plant species change with altitude. He noted that ascending a mountain in the tropics is ecologically similar to ________ traveling from the equator toward the poles, as both journeys involve predictable shifts in temperature and vegetation.

Which punctuation pattern completes the boundaries of the sentence most logically?

The expedition leader provided each member with a list of required gear ________ a waterproof jacket, a topographical map, and a reliable compass ________ before they departed for the high-altitude base camp. Which punctuation pattern most logically completes the text?

The museum’s collection includes several artifacts from the Ming ________ such as a rare blue-and-white porcelain vase and an intricately carved jade screen. Which punctuation mark most logically completes the text?

The James Webb Space Telescope (JWST) has provided unprecedented views of the early universe ________ its sophisticated infrared sensors allow it to peer through dense clouds of cosmic dust that obscured the vision of previous observatories like Hubble.

Which choice completes the text so that it conforms to the conventions of Standard English?

The delegation included several prominent figures in the field of marine biology: Dr. Elena Rossi, an expert in coral bleaching; ________ and Dr. Kenji Sato, who specializes in deep-sea hydrothermal vents.

Which choice completes the text so that it conforms to the conventions of Standard English?