_广西成考网

The dog has always been noted for

• A、protecting children

• B、assisting shepherds

• C、helping hunters

• D、herding cattle

What’s the reason for twins to be at a disadvantage in their intellectual development?

• A、They can only understand their own private language

• B、They communicate with outsiders less than non-twins.

• C、There is little stimulation for them.

• D、Adults don’t like to talk with them.

57（）