题目内容：

根据句子内容和汉语提示，用所给词的正确形式填空（一空一词，每题1.5分，共15分,请把正确的词写在答卷纸上）

71. 1.John Snow wanted to face the _____________( 挑战 ) and solve this problem.

72. 2.He found that it came from the river __________( 污染 )by the dirty water from London.

73. 3.The southern part of Ireland was unwilling and _________(脱离) away to form its own government.

74. 4.For convenience, it is divided _________( 大约 )into three zones.

75. 5.At first my new ________(环境) were difficult to tolerate.

76.  6.These carriages float above the ground and by bending or _________(按，压) down in your seat.

77. 7.We are __________(高兴的) you are coming to work with us.

78.  8.__________(与此同时) you have to prepare the next question depending on what the person says.

79. 9.The functions of your skin are also very __________(复杂的).

80.  10.You can get burned by a _________(多样) of things: hot liquids, steam, fire, radiation ect.