摘要： light travels in a straight line.
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Is it true that light travels in a straight line and never ______ it hits something that reflects it.
A. turns; until B. bends; unless C. breaks; when D. changes; until
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Is it true that light travels in a straight line and never ______ ______ it hits something that reflects it.
- A.turns; until
- B.bends; unless
- C.breaks; when
- D.changes; until
Is it true that light travels in a straight line and never _____ ____ it hits something that reflects it.
[ ]
A. turns; until
B. bends; unless
C. breaks; when
D. changes; until
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B. bends; unless
C. breaks; when
D. changes; until
ht travels in a straight line and never ______ ______ it hits something that reflects it.