【正文】
SectionA 基礎(chǔ)知識(shí)訓(xùn)練 一 . 根據(jù)首字母提示補(bǔ)全單詞。 1. There are s boys playing soccer on the playground. 2. Don’t w even one drop of water, because the earth is very short of water. 3. Humans have p their own environment themselves. 4. Oh, what a m ! Environment has been totally destroyed by those factories. 5. What a s ! Those beautiful flowers are dead because of the poisonous (有毒的 )soil. 二 . 單項(xiàng)選擇。 ( )1. Many years ago, the air was fresh and the water was clean here. We could bees and hear birds . A. see。 dance。 sing B. see。 dancing。 singing C. saw。 dance。 sing D.