The conclusion from the study is not definite; it is just ________.
A
A不确定的、试探性的B正当的、有根据的、有效的C技术性的、专门技术的D彻底的、十足的
Werefertothelimitedrangeofsoundsasthephonicmediumoflanguageandindividualsoundswithinthatrangeas______.
Thesetwoalarmclocksarenormallysettogether,butnowtheyhavebeenresetafewhours_________.
Youngerchildrenarecurious________howthingswork，andmanyofthemwanttotakeaparteverythingwithintheirreach.