49.（   ）

(单选题)It can be inferred from the text that the retail price of pe (单选题)The main reason for the latest rise of oil price is ______. (单选题)The author uses the example of a monkey to argue that robots (单选题)Besides reducing human labor, robots can also ______. (单选题)According to the text, what is beyond man’s ability now is t (单选题)The word “gizmos” (line 1, paragraph 2) most probably means (单选题)Human ingenuity was initially demonstrated in ______. (单选题)45.（ ） (单选题)44.（ ） (单选题)43.（ ）