双基限时练(一) unit 4 warmup ⅰ.单词拼写 1．it is a truth that ________ (全球的) climate is getting warmer year by year. 答案 global 2．an ________ (人造的) leg should be fixed for the young man since his own leg has been cut off. 答案 artificial 3．the ________ (气候) of britain is quite different from that of china.
