实用英语综合教程第三册-8

UNIT 8 Text A PRE-READING TASK Exercise 1 Before reading the passage, try to answer the questions. 1. How many years do you think it takes to double the world population now? 2. What might be the poss

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step by step 第二册 lesson 32

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Good morning. On this Christmas Eve, Laura and I send our best wishes to families across America as you gather in your homes to celebrate the holiday. Christmas is a time of joy and peace, and we hope the holiday season brings all of you happy reunio

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Larry Newitt from the Geological Survey of Canada charts the movement of the magnetic North Pole as it wanders the icy reaches of northern Canada. To determine where the magnetic pole / is, we can't rely on one single observation. What I try to do is

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Last night at 8.30pm on 28th March 80 countries took part in Earth Hour by turning off lights and other things which use electricity. The idea began in Sydney in 2007. Last year, Christchurch was the only New Zealand city to observe Earth Hour but th

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