問題詳情


NEWS HUNT

Kieran Hardy 11/07/2013For years, we thought our Earth was the only blue dot up there. Nowanother has been found. Its name is HD189773b. HD189773b is anexoplanet, a planet outside our Solar System, and is one of the nearestexoplanets to Earth. Even so, ___16___ . Here’s why: It is 63 light years away.That means it is 370,440,000,000,000 miles from us. Even if we fly at 3,500miles an hour, it will take more than 12 million years to get there. ___17___ : It is much bigger, it is made of gas and it is burning hot. Inheat as great as 1,000°C, life is not possible. What is worse, it rains glass. If1,000°C does not kill you, glass rain will.Even so, finding this blue giant ___18___ . It is the first time that we havebeen able to see the color of an exoplanet. The color of a planet gives usideas about what is happening on it. While we have a long way to go beforewe find a new planet to live on, finding a blue dot is a good start.

 exoplanet 系外行星 Solar System 太陽系
16.
(A) we cannot really call it a neighbor
(B) we do not know anything about it yet
(C) we might not be able to stay there for long
(D) we are not sure how long it takes to get there

參考答案

答案：A
難度：適中0.480769
統計：A(150),B(47),C(51),D(64),E(0)

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