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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  72
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] 【C3】
选项
答案 B
解析 副词辨义题。从空格所在句的结构来看，此句并不缺乏任何句子成分，再由空格后的。flipping itself over可以判断，此处只能填入副词修饰flipping。flip over为固定搭配，意为“(使)突然翻转”。备选词汇中，continually(不断地)最符合此处语境，故选B。continually flipping itself over意为“不断地自我翻转”。
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