WhatcanbesaidabouttheexperimentsatRockyMountainArsenal?
A)Theyhavenopracticalvalueinearthquakeprevention.
B)Theymayhavepracticalvalueinearthquakeprevention.
C)Theyarecertaintohavepracticalvalueinearthquakeprevention.
D)Thearticledoesnotsayanythingabouttheirpracticalvalueinearthquakeprevention.
正确答案：D答案：D
[试题分析]推断题。
[详细解答]根据上一题，知道了研究experimentsatRockyMountainArsenal的意义，显然可判断：Theymayhavepracticalvalueinearthquakeprevention，因此，答案为B。
