Beginner support · Translation help
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on on 5. . They they a .
in a in . are the .
Source: NASA, 2026-10-05.
Learn with this story
Check your English
Use the article again before opening the answers.
Vocabulary
- Researchers
- people who study a subject to discover new information
- Research
- careful study used to discover or test information
- Source
- the person, organization, or document that provides information
Comprehension
What happened in this story, and why does it matter?
Answer guide
Cold drops can freeze on aircraft. Add one supporting fact from the article.
Quick check
Which sentence best describes this story?
- September field tests explored ways to protect satellite navigation from false signals.
- Cold drops can freeze on aircraft.
- An October 2 report explains how changing paint brightness reveals airflow pressure.
Show answer
The best answer is B.
Grammar focus: Past simple
Find action verbs that describe completed events. Example forms include “started,” “said,” and “found.”