These continual in temperature make it impossible to decide what to wear.
A. alterations
B. vibrations
C. waves
D. fluctuations
网友回答
A. alterations
B. vibrations
C. waves
(答案→)D. fluctuations
解析： fluctuations波动；waves波浪；alterations(部分)改变，变更；vibrations(物理学上)振动。