Section 4

　　主题提示：Red imported fire ants

　　31. fire ants live in environment except for desert and artic areas

　　32. carried in soil with farming equipment

　　33. fire ants was first found in Brisbane in 2001, itis near the port

　　34. often being found under rocks

　　35. aided by well-trained dogs

　　36. prevent people from getting water they need

　　37. camera wired to a helicopter

　　38. insecticide and bait mixed with corn

　　39. reduce the use of sports supportfacilities

　　40. damage the electrical system

　　Section 4

　　主题提示：Ancient language learning

　　31. Lingua Franca need to know the background of an existing language

　　32. The language itself can promote the global commerce

　　33. The grammar is a standard

　　34. One example people are familiar is Greek

　　35. Pidgin was created for children

　　36. It has many limitations

　　37. RussnOrsk is a mixture of two different languages

　　38. Creole is an entirely invented new language

　　39. The language is very advanced compels

　　40. It has a lot of rare vocabulary