在氢硫酸溶液中,通入或加入少量的下列物质:①O2;②Cl2;③SO2;④CuSO4;⑤NH3能使溶液的导电能力增强的是
( )(5) Here ____ come . A. we B. us C. our
( )(4) Is it _____ camera ? A. you B. your C. yours
( )(3) I want to _____ home . A. go B. goes C. go to
( )(2) It is _____ fan . A. he B. she C. her
( )(1) ___ umbrella is this ? A. Who B. Whose C. What
试卷网 试题网 古诗词网 作文网 范文网
Copyright ©2020-2025 优题课 youtike.com 版权所有
粤ICP备20024846号