阅读下面这篇短文，短文后有2项测试任务：(1)第23～26题要求从所给的6个选项中为第2，3，5和6段每段选择1个正确的小标题；(2)第27～30题要求从所给的6个选项中选择4个止确选项，分别完成每个句子。
Robots 1 The most sophisticated (先进的) Japanese robots,
which have vision systems and work at very high speeds, are still based on
American designs. Studies of robots, particularly computer control software, are
considered to be generally less advanced in Japan than in America or
Europe. 2 Although industrial robots were originally developed as
devices for simply handling objects, today their commonest uses are for more
skilled work like welding (焊接), spray-painting and assembling components. 3
In Britain, robot sales appropriately peaked in 1984, but have been
declining ever since. This is partly because British wage rates are too low to
make robots financially attractive and partly because engineers now have more
experience with robots and are more aware of the difficulties of introducing
them effectively. 4 It has been calculated that a robot uses on average
about 100 times more energy than a human to do an equivalent job. 5 It
is estimated that 20% of all comic book heroes in Japan are robots. This is an
enormous number because comics are so popular that they make up a third of all
material published in Japan. 6 The reliability of robots is measured in
their M.T.B.F. or mean time between failures. This has risen from about 250
hours in the mid-1970s to about 10,000 hours today (equivalent to working 18
hours a day for two years). One way robot manufacturers have increased
reliability is to test every single component they buy, instead of the normal
procedure of just testing a small sample. 7 The biggest single benefit
of introducing robots claimed by Japanese companies is that they increase
quality control. Once programmed, the robots can work more accurately and
consistently than humans, who can get tired and bored. Paragraph 2 ______A. Ongoing Research