题目

下列各组数中，能作为直角三角形的三边长的是（ ） A . 4，5，6 B . 6，8，11 C . 5，22，24 D . 7，24，25 答案：D用所给单词的正确形式填空。 1. Repairing cars is a ______ (dirt) work. 2. To some life means pleasure, to others ______ (suffer). 3. This task is ______ (extreme) difficult. 4. He suffered serious ______ (injure) to the arms and legs. 5. It will cause pollution and the ______ (destroy) of our seas and oceans. 6. What a ______ (shock) state of affairs! 7. His body was brought back to England for ______ (bury).  8. The speed of the car was ______ (frighten). 9. I ______ (congratulation) you on your marriage. 10. The scenery was beautiful beyond ______ (express).