Beginner support · Translation help
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a on 2. in a . The .
the . The of .
Source: NASA, 2026-10-02.
: This 2026-10-03 was on 2026-10-05.
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Check your English
Use the article again before opening the answers.
Vocabulary
- Researchers
- people who study a subject to discover new information
- Data
- facts or measurements collected for study
- Source
- the person, organization, or document that provides information
Comprehension
What happened in this story, and why does it matter?
Answer guide
Cameras record changes in the special paint. Add one supporting fact from the article.
Quick check
Which sentence best describes this story?
- Cameras record changes in the special paint.
- An October update describes tests of instruments that measure cold water drops.
- September field tests explored ways to protect satellite navigation from false signals.
Show answer
The best answer is A.
Grammar focus: Past simple
Find action verbs that describe completed events. Example forms include “started,” “said,” and “found.”