2014
高考英语阅读理解抓分精品训练(30)及答案 阅读下列短文,从每题所给的四个选项(a、b、c、d)中,选出最佳选项。 a at first, the earth’s surface layer (层 ) was made up of huge blocks of hard, solid rocks. there slowly, the rocks broke up into smaller and smaller pieces. finally stones, pebble(卵石) and grains of sand were form ed. many sorts of plants