Sheets of the material could be used to make portable, rollable battery chargers for mobile electronic 20 , like notebook computers or cellphones.
答案：(D) devices
語意「可攜式、可捲曲的行動電子『裝置』充電器」，devices 符合，呼應後文舉例筆電、手機；nurseries（托兒所）、instincts（本能）、horizons（視野）都不合。
本題大考中心未公布逐題答對率，以下不談數據，只談觀念。
四個選項都是名詞的複數，中文差很遠，照理不難分；但如果只讀空格所在的半句，會不確定「行動電子什麼」，只好猜。這一格往後讀幾個字就有答案。
四個選項都是名詞，可見這一格考的是語意，那就往後讀。空格後面緊接著就是 like notebook computers or cellphones（像筆記型電腦或手機）——作者直接把例子擺出來了，而筆電與手機正是「電子裝置」，填 devices。整句是「這種材料做成的薄片可以用來製造可攜、可捲曲的充電器，供筆電或手機這類行動電子裝置使用」。這一招在說明性的文章裡特別好用：看到 like、such as、for example 後面接的例子，往往就是空格的定義。
instincts（本能）：講的是與生俱來的反應，與電子產品無關。nurseries（幼兒園；苗圃）、horizons（視野、地平線）：兩個與筆電、手機這組例子完全對不上。
an electronic device（電子裝置）、a mobile device（行動裝置）、a battery charger（充電器）、portable（可攜的）、rollable（可捲曲的）、push for（積極推動）。
Solar panels can turn sunlight into electricity. Conventional solar panels are 16 crystallized silicon, the same material used in computer chips. But silicon is expensive and the panels are heavy. Facing this 17 , engineers at a Japanese company have developed a thin-film flexible solar panel. The new panel is not the first of its 18 , but it may be the most flexible—it bends like paper.
At one kilogram per square meter, this new type of panel weighs one tenth of conventional solar panels. 19 means it could be used in novel places, such as the roof of a tent, the walls of a building, or the top of a bus. Sheets of the material could be used to make portable, rollable battery chargers for mobile electronic 20 , like notebook computers or cellphones. As many countries are now pushing for green technology, the new flexible solar panels may spur a great demand.