1. 选词填空

at a depth of, for instance, in turn, nowhere near, be essential to, (be) rich in

1. （1） When it comes to health a nutritious diet everyone.
3. （2） Water was found30 metres.
5. （3） By comparison. she is as hard-working as you are.
7. （4） Many natural means have been used in organic farming. animal wastes are used to keep the soil fertile.
9. （5） I like the orange, which is juicy and vitamins.
11. （6） The advancement of technology can boost education. the development of education can contribute to technological progress.