Is it true that light travels in a strai
题型:选择题
问题:
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