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How often does Halleys comet appear?
Question 1:
How often does Halleys comet appear?
A.
Every 100 years
B.
Every 30 years
C.
Every 25 years
D.
Every 76 years
These questions are from this test. Would you like to take a practice test?
Trivial Practice Quiz science-technology - Test 33 | Englishfreetest.com
30 minutes
15 questions
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