单选题
According to the study, the number of Americans who reported at least one severe sunburn rose from 30% to 39% ______.
A) from 1986 to 1996 C) during 1997
B) from 1987 to 1997 D) during 1996
A、
According to the study, the number of Americans who reported at least one severe sunburn rose from 30% to 39% ______.
B、
from 1986 to 1996
C、
from 1987 to 1997
D、
during 1997
E、
during 1996
【正确答案】
A
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