B．sea rocket grows aggressively alongside unrelated neighbors

　　C．sea rocket grows aggressively alongside its siblings

　　D．sea rocket is a kind of bush without flowers

　　()10.How can the plants communicate with each other according to experts’ suppose?

　　A．Plants communicate by using tiny chemical signatures specific to each plant’s family.

　　B．Plants communicate with each other through their roots.

　　C．Plants communicate with each other by their leaves.

　　D．Plants communicate with each other with their flowers.

　　(三)

　　Schools are almost all connected to the Internet. But some have more technology, and use it more, than others. For example, some schools use computers for activities like video conferencing, to bring the world into the classroom.

　　And some classrooms are equipped with things like a Smart Board, a kind of interactive whiteboard. Interactive whiteboards are large displays for presentations. They connect to a computer and can operate by touch. They can be used for documents or writing or to project video.

　　Some teachers are trying creative new ways to teach with devices like iPods and mobile phones. But educators say the most important thing, as always, is the content.

　　Yet technology can have special importance in some cases. Cosmobot is a therapy robot. It stands about half a meter tall and has a blue body and a friendly face with big eyes.

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