阅读下面短文，从短文后所给的A、B、C四个选项中选出最佳选项，以填入空白处的最佳选项。    

    "Sesame Street" is a TV programme for children. It first appeared in New York 1 1969. It is called "the longest street in the world". That's because the TV programme by that name can be seen in so many parts of the world.

    In the US over six million children watch the programme regularly. The viewers include more than half the nation's pre-school children. Parents love the programme. Many teachers also think it is very helpful, 2 some educators are against certain things in it.

    Tests show children from different background have benefited from watching the programme. Those who watch it five times 3 week learn more than those who watch it once in a while.  In the US the programme is shown at 4 hours so that more children can watch it. The programmes all 5 songs, stories, jokes and pictures to help children understand numbers, letters and human relationship. But there are some differences. For example, the programme made in Mexico City devotes more time to teaching whole words than to teaching letters one by one.

    Why is "Sesame Street" more successful than other children's shows? There 6 many reasons—the good education of its producers, the support 7 the government and businesses, and the skillful use of many TV tricks. Also 8 watch it with their children. This is partly because famous adult stars often appear on it. But the best reason may be that it makes every child 9 able to learn. Children find themselves learning, and they want to learn 10 .

史学界对郑成功收复台湾的主要原因有不同的观点。一种观点认为，郑成功是因为感到在大陆抗清无望，遂渡海驱逐荷兰殖民者，收复台湾作为继续抗清的基地。另一种观点认为，郑成功收复台湾的斗争史荷兰殖民者于中国人民的矛盾尖锐化的必然结果。还有一种观点是认为，郑成功属于海上商人集团，深切感受到荷兰殖民者侵略之害，而他当时在大陆的抗清斗争又遭受挫折，自然而然就把斗争矛头转向侵占台湾的荷兰殖民者，收复台湾以建立新的抗清基地。结合所学知识，谈谈你的观点。