Last October, while tending her garden in Mora, Sweden, Lena Pahlsson pulled out a handful of small____(carrot) and was about to throw them away. But something made her look closer, and she noticed a____(shine) object. Yes, there beneath the leafy top of one tiny carrot was her long-lost wedding ring.

    Pahlsson screamed____loudly that her daughter came running from the house. "She thought I had hurt____(I)," says Pahlsson.

    Sixteen years ____(early), Pahlsson had removed the diamond ring____(cook) a meal. When she wanted to put the ring back on later, it was gone. She suspected that one of her three daughters — then ten, eight, and six — had picked it up, but the girls said they hadn't. Pahlsson and her husband ____(search) the kitchen, checking every corner, but turned up nothing. "I gave up hope of finding my ring again," she says. She never replaced it.

    Pahlsson and her husband now think the ring probably got ____(sweep) into a pile of kitchen rubbish and was spread over the garden____it remained until the carrot's leafy top accidentally sprouted (生长) through it. For Pahlsson, its return was____wonder.

20世纪60年代就有人语言可能存在由4个氧原子构成的氧分子（O₄），但一直没有得到证实。最近，意大利一所大学的科学家使用普通氧分子和带正电的氧离子获得了这种新型氧分子，并用质谱仪探测到了它的存在。下列叙述中正确的是（ ）