题目

71. Only by _______________（科学的）training can Liu Xiang make such rapid progress in the 110-meter hurdle. 72. His words left me the ___________________ （印象）that he didn’t like the plan at all. 73. The United Kingdom __________________（组成）of Great Britain and Northern Ireland. 74. He had never been knocked out in a __________________（职业的）fight. 75. It is said that you will be affected by the ________________ （辐射）if you talk on the mobile phone for long. 76. The ________________（火山爆发）of a volcano often brings lava and ash clouds. 7 We call ______ mooncakes.[    ] 　　A. it    B. them    C. they    D. him