What Time Is It on the Moon? Scientists Consider How Lunar Clocks Could Work

Study the questions and tasks

Work through the material below, or start the interactive practice above to complete an attempt. Try the exercises before opening any answer or transcript sections, then use them to review your work.

Practice level

C1. Try this level if you can follow the instructions and understand most of the language; choose an earlier level if you need more support.

Question formats

Single choice

How to approach this practice

Use the surrounding sentence to identify the meaning and word form needed. Check which words naturally go together.

1. Question 1 · Single choice

   Choose one answer.

   Which option best defines “overlook” as used in the article?

   1. To inspect something repeatedly
   2. to fail to notice or give sufficient attention to something
   3. To supervise a complicated process
   4. To move beyond a visible boundary
   Check answers and explanations

   Answer

   to fail to notice or give sufficient attention to something

   Here, “overlook” means failing to notice or sufficiently appreciate something.

2. Question 2 · Single choice

   Choose one answer.

   Which option best defines “dependable” as used in the article?

   1. reliably accurate, effective, or trustworthy
   2. Temporarily available
   3. Difficult to interpret
   4. Widely distributed
   Check answers and explanations

   Answer

   reliably accurate, effective, or trustworthy

   “Dependable” describes something reliably accurate, effective, or trustworthy.

3. Question 3 · Single choice

   Choose one answer.

   Which option best defines “surroundings” as used in the article?

   1. The equipment inside a spacecraft
   2. the conditions, environment, and objects around a person or thing
   3. The route connecting two distant locations
   4. The rules governing an international organization
   Check answers and explanations

   Answer

   the conditions, environment, and objects around a person or thing

   “Surroundings” means the environment and conditions around something.

4. Question 4 · Single choice

   Choose one answer.

   Which option best defines “consistently” as used in the article?

   1. in a manner that remains uniform, reliable, or unchanged
   2. With increasing uncertainty
   3. Only under exceptional circumstances
   4. According to separate interpretations
   Check answers and explanations

   Answer

   in a manner that remains uniform, reliable, or unchanged

   “Consistently” means in a uniform and reliable manner.

5. Question 5 · Single choice

   Choose one answer.

   Which option best defines “significant” as used in the article?

   1. Highly technical but unnecessary
   2. important enough to have a noticeable effect or consequence
   3. Commonly observed but easily ignored
   4. Limited to a single organization
   Check answers and explanations

   Answer

   important enough to have a noticeable effect or consequence

   “Significant” indicates importance sufficient to produce noticeable consequences.

6. Question 6 · Single choice

   Choose one answer.

   Which option best defines “deceptively” as used in the article?

   1. in a way that appears simpler, smaller, or less difficult than it really is
   2. In a manner designed to mislead intentionally
   3. With complete technical transparency
   4. Through a process requiring no explanation
   Check answers and explanations

   Answer

   in a way that appears simpler, smaller, or less difficult than it really is

   “Deceptively” signals that something appears simpler than it actually is.

7. Question 7 · Single choice

   Choose one answer.

   Which option best defines “foundation” as used in the article?

   1. A temporary operational procedure
   2. an underlying basis that supports a system, idea, or activity
   3. A formal disagreement between experts
   4. A physical location for launching spacecraft
   Check answers and explanations

   Answer

   an underlying basis that supports a system, idea, or activity

   A “foundation” is an underlying basis supporting a system or activity.

What to review next

Keep a short list of unfamiliar words with their meanings and example sentences. Practise recalling them later, then use them in a sentence of your own.

A focused practice result shows how you did on these tasks. Use several activities across skills to decide what to study next; one practice score does not certify an overall CEFR level.

Before you practise: a worked example

Read the whole sentence before choosing a word. Check both its meaning and the words it naturally combines with.

Please make an appointment before visiting the clinic.

Make an appointment is a natural word combination. Knowing a dictionary meaning alone may not tell you which verb fits.

This teaching example is separate from the scored questions. After your test, compare any mistakes with the explanation and revisit the topic before trying again.