1．It is amazing that the little boy can swim________the river________100 meters wide.
A．across；measuring
B．over；measured
C．across；measure
D．through；measuring
解析：选A。across表示从表面上穿过；over指越过；through指从中间穿过，所以第一空用across；第二空用现在分词作定语，修饰the river。 本句意为“那小男孩能游过一百米宽的河真是了不起。”
