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能力演练 一、语法填空 专题训练(四) 熟记固定搭配 固定搭配（固定词组或固定句型）在语法填空中的出现频率相当高,因此,平常多下苦功,尽量多记词组,熟练掌握常用句型，是提高语法填空题得分率的好办法,而且也有益于提高写作水平。 ◆活学活用 阅读下面短文，按照句子结构的语法性和上下文连贯的要求，在空格处填入一个适当的词或使用括号中词语的正确形式填空。 Today is World AIDS Day,a day that reminds us 1 how HIV has weakened the whole world over the past two decades 2 the time it was reported.It is the role of the government 3 makes a difference in fighting against the disease and helping AIDS and HIV infected patients get the treatment they need in a discrimination(歧视)-free environment. The estimates(估计)of UN AIDS suggests that 33.2 million people live with AIDS worldwide, 4 (include)2.5million children.An estimated number of 2.5million people were 5 (new)infected in 2007. A total of 223,501 people 6 (infect)with HIV have been reported in China.Of those,62,836 are AIDS patients and 22,205 have died.It | 
