Robots differ from automatic machines ________ after completion of one specific task，they can be reprogrammed by a computer to do another one.

英文翻译：在经济危机之后，人们不再认为他们房子的价值会继续升高。

Theoutlineofrooftopsandchimneys________againstthepalesky.

It has been found that a strong ________ help overcome the effects of distraction.

英语翻译：他是公司的首席执行官,但总是平易近人。