Complete the dialogue
Duck :Dear kangaroo !why don't you ​

1)i spit fire and lava,  i'm a dangerous giant.,nice i have a bad reputation.what is my name?   answer: volcano 2)first shiny,then rattles,then all water.answer: thunderstorm 3)very bright arrowburned lime from the village.answer: lightning 4)this wind is so strong,what he cuts down trees heand with houses rips the roof.did you hear about the wind? answer: tornado 5)you stay away from her.: will sweep away everything in its pathin the mountains screaming i'll scream,she could be down there.answer: an avalanche

1. The first digital computer could__solve__a lot of mathe­matical problems at a fast ___sped___. 2. Vannevar Bush built the first __electronic___computer in 1930. 3. Babbage's analytical engine was designed to ___process___ data. 4. J.von Neumann invented a machine that was able to__process___ not only data but also __texts___. 5. Neumann__came up with___ the idea of storing data in a __memory___ . 6. Computers use two conditions for__numeric___symbols. 7. The invention of___interface___ _devices__made computers possible to control and __generate___electronic signals. 8. Due to__cash___ __memorycomputers could perform__operations much faster.