University of International Business and Economics What is the main idea of news item three? Singapore's central bank has imposed a $4.8m civil penalty on the Beijing-controlled parent of China Aviation Oil for insider trading during the city state's worst financial scandal in a decade What is the main idea of news item four? BenQ,Taiwanese diversified electronics maker, acquired Siemens'mobile phone unit in June.It has reported sharply lower net profit in the first half of this year as competition hit sales in its key product lines. 制卧爱价贫易大孝University of International Business and Economics • What is the main idea of news item three? Singapore’s central bank has imposed a $4.8m civil penalty on the Beijing-controlled parent of China Aviation Oil for insider trading during the city state’s worst financial scandal in a decade. • What is the main idea of news item four? BenQ, Taiwanese diversified electronics maker, acquired Siemens’ mobile phone unit in June. It has reported sharply lower net profit in the first half of this year as competition hit sales in its key product lines