下图为苹果产品链示意图（以ipad为例），读图回答下列问题。

舒克申（1929～1974），____编剧，导演，演员，作家。1955年加入共产党。1960年毕业于苏联国立电影学院导演系。1957年第一次在影片《两个费道尔》中扮演主要角色，获得好评。后又主演C.格拉西莫夫导演的影片____而获国家奖金。他自编自导的第一部影片是在1964年____，并在其中扮演主角。该片不仅在全苏电影节上获奖，而且在第十六届威尼斯国际电影节上获金狮奖。1973年他再度自编自导自演了影片____，该片在全苏电影节上又获大奖。

春秋时期，各霸主都曾进行过改革以增强国力，其统治下的社会环境相对安定，使经济得以发展。齐桓公、晋文公成为春秋时期霸主的相同因素有（    ）

①以“尊王攘夷”为口号  ②发展生产   ③整顿内政  ④注重军队建设

阅读理解

    Macao is only forty miles from Hong Kong and it is easy to reach. You can get there by sea. It is an interesting place and it has a long history. Macao is part of China and most people living there are Chinese.

    The first Europeans in Macao came from Portugal. More than four hundred years ago the Portuguese went there to trade with China. Some settled and made their homes there. They built strong forts（要塞）to guard the city and the harbor. They also built churches, schools, hospitals and other places. Slowly the city grew. People from many other countries came to live and work in Macao.

    Today many people live in Macao. Some only go there to watch dog-racing or motor-racing or to gamble（赌博）with their money. But Macao is a quiet and peaceful place. It is pleasant just to walk around and look at the old buildings and forts. You feel you are back in the old days. Of course，some of the buildings are now in ruins. The Church of St. Paul has only the front wall with many steps leading up to it. But it is still interesting to see.

    When you are hot and tired, there are small cool gardens to rest in. When you are hungry, there are good restaurants with many kinds of food. Nearby are some islands, which are also nice to visit and are easy to get in. There are certainly a lot to see and to do in Macao.

某单位用3.2万元购买了一台实验仪器，假设这台仪器从启用的第一天起连续使用，第n天的维修保养费为$\frac{n+49}{10}\left(n\in N^{*}\right)$元，若使用这台仪器的日平均费用最少，则一共使用了____ 天．