問題詳情

    The sun isn’t a uniform ball of fire. Instead, it bursts with flares and spots, and it has other phenomena, 46 are completely understood. Sunspots can be specks or areas tens or hundreds of thousands of miles wide. They are dark because they’re cooler than the 47 areas. Sunspots occur in pairs or groups, and can last from hours to several weeks, 48 around the sun’s surface. Sunspots are caused when the sun ‘s surface is disputed. The surface, which contains all the sun’s heated energy, breaks. 49 material then leaks from the crack like a whirlwind, which appears as a spot. Solar wind affects power on Earth. It can 50 satellite transmissions, radio waves, and GPS data.
46.
(A) none of them
(B) none of which
(C) every of which
(D) each of them

參考答案

答案：[無官方正解]
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)

內容推薦

內容推薦