Babieslearn to communicateat different rates — so when it comes to making sounds, there’s a wide range of what’s considered normal. (Just like adults, some babies are little chatterboxes, whereas others are more introspective!) Still, if your baby isn’t cooing or making sounds by the...
A.To persuade people to stop making noises. B.To explain why people keep talking. C.To discuss why people like talking about weather. D.To encourage people to join in conversations. 4.By "the buzzing of a fly"(Para.1), the author means"___". A.the voice of a chatterbox B.meani...