It can be inferred from the passage that-考呗网

专四

单选题It can be inferred from the passage that

A．The newly-discovered belt is in fact the outmost layer of Satur
B．We can't see the newly-discovered belt without the help of imaging magnetomete
C．There can hardly be any belts similar as the newly discovered one at any other planet in the solar syste
D．The main radiation belts aren't connected with Saturnian rings at al

参考答案：D进入在线模考

【定位】第5段和第6段。
【解析】推理题。第5段和第6段谈到，该新发现的辐射带在土星大气层顶端外l．5万英里开始，延伸到其最里层的土星环的内缘。在该辐射带与土星环的交接处，当有辐射颗粒hop over obstructions like Saturn’S rings．这一点是科学家们未曾估计到的东西。由此可见，先前所有的辐射带巾，都没有发生过辐射颗粒跨越土星环之事，也就是说，其他各主要辐射带均与土星环相距甚远。所以选项D正确。
【点睛】选项A、B、C不能在文中找到充分根据。

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