完形填空

　　Today is Sunday. Mike and Peter 1 go to school. Listen! They are talking about the life  2 in the room." 3 will the world be like? "Peter asks."I think that the world will be a 4  place to live in. And we will 5 machines and robots at home. They will help us do lots of 6  , "says Mike. "The robots will help  7 cook dinner, clean the houses and  8 old people. I think there will be a kind of medicine(药)  9  it can make us live more than 100 years, "Peter says."What will you do then? "says Mike."Then I will  10  my great-grandchildren(曾孙)to the moon, "says Peter. "The moon? I will go to the Mars(火星)with my wife, "says Mike.

（2015•威海）电梯为居民上下楼带来很大的便利，出于安全考虑，电梯设置了超载自动报警系统，其工作原理如图所示，电梯厢底层装有压敏电阻R₁，R₂为保护电阻，K为动触点，A、B为静触点，当出现超载情况时，电铃将发出报警声，电梯停止运行，下列说法正确的是（　　）

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He failed to supply the facts relevant ________the case in question.

用托盘天平称量一粒大米的质量，下列方法中可取的是（ ）