每日一练丨希赛考博英语真题练习（12.15）

【希赛】考博英语每日一练（12.15）

37.Today, housework has been made much easier by electrical ________.【上海理工大学2018】

A.facilities B.appliances C.instruments D.equipment

38.There is supposed to be a safety ________ which makes it impossible for trains to collide.【上海理工大学2016】

A.appliance B.accessory C.machine D.mechanism

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