经过两天艰难的bá涉，我们来到了那镶qiàn在九曲黄河之上的璀璨明珠——壶口瀑布。一望无际的黄河水从远方浩浩荡荡迤逦而来，到了壶口却呈现出另一番zhǎn新面貌A激浪滔天，势若龙腾，炮轰雷鸣震耳欲聋。这一气象万千的景象，给人以绚丽多姿的B（幻想／遐想）；这一大气磅礴的诗章，给人以排山倒海的力量；____________，____________；这一洗涤灵魂的殿堂，给人以C（指点迷津／柳暗花明）的光芒。

分解因式：x²﹣1=____ ．

完形填空, 阅读下面短文，掌握其大意，然后在每小题所给出的A、 B、 C三个选项中选出最佳选项，

It was a long hard fight, but by now it was 1and this helped us very much. We ran here and there in the trees, calling and2. The enemies could not see us and did not know how many of us they were 3In the end the first officer shouted to them：                                                  

“Put down your4and stop fighting! The captain has fifty island people to help him. We can kill you 5!”

     So the enemies 6 fighting and we took their guns. Three of the enemies7 to come to join us, but the others refused. So we 8them in my cave. I stayed to 9 the prisoners(犯人), while the captain and his men went back to fight for the ship.

     All night we listened to the 10of guns and shouting, but in the morning, when the sun  11, the captain was master of his ship again. I went down the shore(海岸) to meet him.

“My dear friend” he cried, “There's your12! I’ll take you to the ends of the13in it!” I put my 14round him, and we laughed and cried together. How 15I was to leave the island.