过滤式自救器只能使用1次,用后就报废。
参考答案:对
37. Stop! If you go any _____, you will be in danger..
A.far
B.farther
C.further
D.far away
The population of China_______ than_______ in Japan.
A.are more, those
B.is more, that
C.is larger; that
D.are lager; those