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  3. Cubes aren’t usually the go-to shape when creating an object that’s meant to

Cubes aren’t usually the go-to shape when creating an object that’s meant to

游客2023-08-04  64
问题     Cubes aren’t usually the go-to shape when creating an object that’s meant to move around, but【C1】________in Switzerland have created one that can do just that—along with a【C2】________of other surprising talents. Called the Cubli, it measures nearly 6 inches on each side and can walk around by【C3】________flipping itself over. Perhaps more impressively, it can also balance on any of its sides or even just a single corner. As the research team from ETH Zurich’s Institute for Dynamic Systems and Control【C4】________in a video, the cube can even remain balanced while a surface is raised up at an angle beneath it.
    Though it’s a moving cube, the Cubli still【C5】________on a series of spinning wheels to get going. Three internal wheels angled along a different axis each will spin faster or slower in order to maintain enough momentum to keep the cube balanced. By quickly【C6】________a spinning wheel, the cube can also be caused to flip over,【C7】________allowing it to move around. The researchers say that Cubli’s system of spinning wheels is similar to what【C8】________satellites out in space, and that other research groups have considered using this technology to build robots that could be used to explore other planets.
    A group of researchers at MIT later demonstrated another use for【C9】________like this: allowing a robot to reassemble itself. MIT’s cubes had magnets embedded across their sides and edges, which let them grip each other and form different shapes. Though they weren’t able to balance like the Cubli can, MIT’s "M-blocks" could move much【C10】________— actually hopping off the ground when getting around.
    A)blocks        E)effectively  I) hardly      M)spheres
    B) continually  F) further     J) preceding   N) stabilizes
    C) delightful   G) halting     K) relies      O) stronger
    D) demonstrates H) handful     L) researchers [br] 【C2】
选项
答案 H
解析 名词辨义题。根据空格前的不定冠词a和空格后的介词of可以判断，此处需要填入一个单数名词。备选词汇中只有handful(少数，少量)符合此处语境，故选H。a handful of为习惯用法，意为“少数的，少量的”。
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