根据下列句子及所给汉语注释或首字母，在句子右边的横线上写出空缺处各单词的正确形式。（每空只写一词）

66.His_______(口音) gave him away. He was from Northeast China . 66. _________

67.The new shop across the road has taken away some of my best____(顾客)67. ____

68. The two men stood in the doorway for a little time in   (沉默)      68.______

69.The man_______(威胁) the shop assistant with a knife.          69.________

70. He _______ (慷慨) offered to share all this with me.            70. _______

71. It is in 1949 that they took_________(占有) of this Island.       71. _______

72. Your suggestion sounds very ____________( 吸引人 )．       72.        

73. Our _______(政府) paid more attention to the air pollution．    73.________

74. We’ll ________ (保护) the plants against the weather．         74._______

75. ____(从传统上), western women are married in long white dresses. 75.________

下面对实验现象的描述中，正确的是                         

A．红磷在空气中燃烧时产生大量的白雾

B．铁丝在氧气气中剧烈燃烧，火星四射，生成黑色固体四氧化三铁

C．将二氧化硫气体通入紫红色的高锰酸钾溶液中，溶液褪色

D．纯净的氢气在空气中燃烧发出蓝紫色火焰，同时放出大量的热