第四部分： Part A 单词拼写（每小题1分满分10分）

71.This year, scientists will test another 60_____（志愿者）and will be in a better position to explain the results.

72.Cancer is one of the_______(致命的)illnesses in the world.

73.I wonder why English is a language with so many c______ rules.

74.Confucius was born in China and lived from 551 BC until 479 BC. He greatly i_____ the development of China’s culture and education.

75.By the latter half of the 14th century, English was ______(采纳) by all classes in England.

在电气化铁路上，沿着铁路线旁边，架设一排支柱（钢筋混凝土方柱或等径圆支柱），或通过软横跨、硬横跨线路两侧，以一定的悬挂形式将接触线直接架设在铁路线路的上方，铁路上称其为接触网。