题干

下列做法符合环保要求的是(    )

A:造纸厂的碱性污水直接排放到小河中

B:炼铁厂的废气中含有大量的CO未经处理直接排放到空气中

C:农业上合理高效地使用农药、化肥

D:使用过的干电池直接丢入垃圾堆中

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答案(点此获取答案解析)

C

同类题5

完形填空

    Once there was a huge apple tree. A little boy loved to come and play around it every day. He loved the tree and the tree loved to1with him.

    Time went by --- the boy had grown up and he2 played around the tree. One day, the boy came back to the tree and he looked3“Come and play with me,” the tree asked the boy. “I'm no longer a kid. I4play around the tree any more.”the boy replied,“I want toys. I need 5to buy them.” “Sorry, I don't have money. But you can 6 all my apples and sell them. So, you will have money.” The boy picked all the apples on the tree and left7. The boy never came back after he picked the apples. The tree was sad.

    After that the boy returned and asked the tree for help again and again. First, he asked the tree for a house, and the tree gave the boy all its branches. Second, he told the tree he needed a 8to go sailing, the tree offered its trunk9 the boy returned after he left for so many years. “Sorry, my boy. But I don't have anything for you any more. The only thing left is my dying root(根),” the tree said with tears.

    “Good! Old tree root is the10 place to lean on and rest”. The boy sat down and the tree was glad and smiled with tears.

    This is a story of everyone. The tree is like our parents. When we were11we loved to play with Mom and Dad… When we grow up,we 12them,and 13come to them when we need something or when we are14 No matter what,parents will always give everything they could to make us happy. We may think that the boy is15to the tree but that's how all of us are treating our parents.