填空题 Complete the summary below.
Choose ONE WORD ONLY from the passage for each answer.
Write your answers in boxes 24-26 on your answer sheet.
When will we have a thinking machine? Despite some advances, the early robots had certain weaknesses. They were given the information they needed on a {{U}} {{U}} 11 {{/U}} {{/U}}This was known as the 'top-down' approach and enabled them to do certain tasks but they were unable to recognise {{U}} {{U}} 12 {{/U}} {{/U}}Nor did they have any intuition or ability to make decisions based on experience. Rodney Brooks tried a different approach. Robots similar to those invented by Brooks are to be found on {{U}} {{U}} 13 {{/U}} {{/U}} where they are collecting information.