【题目】Plants and trees need water to grow; ______, friendship needs our heart and passion to develop.
A.similarly
B.generally
C.naturally
D.fortunately

【答案】A
【解析】A. similarly同样地，类似于；B. generally通常，一般地；C. naturally自然地；D. fortunately幸运地。句意：植物和树生长需要水，同样，友谊发展需要真心和热情。根据句意选A.