题目内容：

    With the increase in cross-country marriages, many Australian children are growing up with other languages spoken at home. Actually, it’s not just in Australia. In many countries, more and more children grow up speaking two, if not three or more languages. Thus, we know it is possible to learn more than one language from a young age. We also know that children are much better at learning another language than adults. But many parents have a common question. Should they speak to their children in their first language, or try to speak to them in the second language?

Some older studies have reported that bilingual(双语的) children learn language more slowly and have smaller vocabularies than others of the same age. Parents of bilingual developing children felt worried when they saw these reports. But these studies are doubtable. They haven’t taken schooling and parental income into consideration, both of which heavily influence language outcomes.

Recently some new studies focus mainly on the advantages of being bilingual. It appears that repeatedly switching from one language to another will exercise the brain. Bilingual children will particularly ignore unrelated information and keep unnecessary reactions under control. That makes the process of learning new rules much faster.

Some new Australians have no choice but to speak to their children in their native language. While learning English is quite necessary, connections to family cultural backgrounds are also important. Through the native language, children can better understand their parents’ native culture. Happily, being bilingual appears to be good for the cross-cultural communication.

1.What is the shared concern of many parents from bilingual families?

A.The schedule of training courses for children.

B.Their family members’ different living habits.

C.Their children’s losing interest in language learning.

D.The choice of the spoken language in the family’s daily life.

2.Why does the author doubt the older studies on bilingual children?

A.They used a lot of outdated data.

B.They were not done in Australia.

C.They ignored some influential aspects(方面).

D.They were not supported by scientific evidence.

3.According to the new studies, being bilingual can help children ________.

A.focus on certain things.

B.have more confidence in playing games.

C.show their strong family backgrounds.

D.lead a better life in the future.

4.What function (作用) of the native language is talked about in the last paragraph?

A.Remind parents of their homeland.

B.Bring economic benefits to parents.

C.Connect children to their family’s original culture.

D.Help children develop the habits of following rules.