钝化的目的是抑止催化剂较高的初活性。
正确
暂无解析
Itisimportantto________yourskinfromtheharmfulstrongsunlight.
Idon’tneedanyhelpatthemoment,butI_____youroffer.
We_____knowledgefromourfamilies,schools,jobs,andthemassmedia.
_____hespeakssoftlyisnoproofthatheiskind.
句子写作:”HappyChristmas“hesaid.