Theconclusionfromthestudyisnotdefinite;itisjust________.
A、tentativeA
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
______movesonascaleofthenationallanguage,dialects,andindividualwaysofcommunication.
Lyingundertheskull,thehumanbraincontainsanaverageoftenbillionnervecellscalled______.
Linguistscanconcentrateonalltheaspectsoflanguageatonce.
Weather_______,we’llgooutforawalk.
Youngerchildrenarecurious________howthingswork，andmanyofthemwanttotakeaparteverythingwithintheirreach.
