In fact, the Earth 11 20,000 times more energy from the sun than we currently use.
答案：(B) receives
receives energy from the sun（從太陽接收能量）表示地球接收到的太陽能是目前人類使用量的兩萬倍；repeats／rejects／reduces 均不符合此處語意。
四個選項都是 re- 開頭的動詞，長得很像，容易混淆，掃過去每一個都眼熟，於是憑哪個讀起來順就選了它。
四個選項都是及物動詞、後面都接得上 energy，形態這條路刷不掉，可見這一格考的是語意。真正的線索在空格後面的 from the sun——from 標出的是來源，而四個選項裡能配 from 講「從某處得到」的只有 receive（收到、接收）。receive A from B 是成組的說法。填進去讀成 the Earth receives 20,000 times more energy from the sun than we currently use（地球從太陽接收到的能量，是我們目前用量的兩萬倍）。
repeats（重複）後面接的是被重複的動作或話；rejects（拒絕、排斥）方向剛好相反——地球不是把太陽能擋回去，而是收下來；reduces（減少）後面接的是被減少的量，與 20,000 times more（多達兩萬倍）語意矛盾。三個都是 re- 開頭的動詞，形態吻合，容易被順手選走。
receive A from B（從 B 收到 A）、a source of energy（能源、能量來源）、reject（拒絕、排斥）、reduce（減少）、times more than（是……的幾倍）、currently（目前、現在）。
The sun is an extraordinarily powerful source of energy. In fact, the Earth 11 20,000 times more energy from the sun than we currently use. If we used more of this source of heat and light, it 12 all the power needed throughout the world.
We can harness energy from the sun, or solar energy, in many ways. For instance, many satellites in space are equipped with large panels whose solar cells transform sunlight directly 13 electric power. These panels are covered with glass and are painted black inside to absorb as much heat as possible.
Solar energy has a lot to offer. To begin with, it is a clean fuel. In contrast, fossil fuels, such as oil or coal, release 14 substances into the air when they are burned. 15, fossil fuels will run out, but solar energy will continue to reach the Earth long after the last coal has been mined and the last oil well has run dry.