To make sure the elevator was safe for his old friend, Thompson used a toy to test the elevator. Thompson asked his favourite cat, “Are you ready to go downstairs without moving?”
为了确保 elevator 对他的老朋友来说是安全的,汤普森用一个玩具来测试 elevator 。汤普森问他最喜欢的猫:“你准备好不动地下楼了吗?”
根据 go downstairs without moving(不动地下楼),可知elevator 应该是电梯。结合选项,只有B符合语境,故答案为B