生又嘱再四，吴锐身自任而去锐身自任：
参考答案：挺身担起责任。
Not to waste time searching, she kept everything just ________ she could get her hands on it.
A．where
B．as
C．when
D．if
用20gH2与足量的O2完全反应，生成多少克水？
