生物对环境的适应就是指生物适应周围的非生物环境。（ ）
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题目分析：生物对环境的适应不仅包括非生物环境，同时也包括生物环境。
No conclusion _______ about whether to tear down the old buildings for a theme park until
several discussions have been held. [ ]
A. will be reached
B. is reached
C. is being reached
D. has been reached
在一定时期及一定区域内需要运送的人员，是公路客运对象的来源，称为客流。
