问题
选择题
— He said, “ Light travels much faster than sound.”
— He said that light _______ much faster than sound.
A．travelled
B．travels
C．had travelled
D．travel
答案
：B
：考查时态。客观真理永远都使用一般现在时。光传播得比声音快，这是真理，故使用一般现在时。故B正确。