One can figure out the meaning of reading-lamp to be "lamp for r

One can figure out the meaning of reading-lamp to be "lamp for reading" by its （ ）.
A、onomatopoeic motivation
B、morphological motivation
C、semantic motivation
D、etymological motivation
【正确答案】：B
【题目解析】：本题考查形态理据。reading-lamp这个词是根据形态理据合成的，这类合成词的每个部分都有单独的含义，其合成的新词的含义也可以通过单独部分的词义叠加而知。所以lamp for reading是单独部分的词义叠加成为reading-lamp。故选B。A选项onomatopoeic motivation——拟声理据；C选项semantic motivation——语义理据；D选项etymological motivation——词源理据。ACD三项均不符合题意。