兩份水樣pH值的測(cè)定結(jié)果分別為4.0和7.0，這兩份水樣的氫離子活度相差（）倍。
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暫無(wú)解析
Thelittleboydidn’tknow_______.
Whatactually__________agoodangle—oragoodselfieoverall—isrootedinwhatweconsiderbeautiful.
Mostofthepeopleinthegroupfeltratherdisappointedattheirtravellingabroad.Theysaythatit_______betterorganized.
"Thelecturerwasatallthinmanwithwhitehair.""Thenit_______Dr.Fellbecauseheisshortandfat.It_____Dr.Jones;heisthin."
ProjectHopeisanorganization_____raisesmoneytobuildschoolsandbuybooksforpoorchildren.
