Question

One advantage of eating a balanced breakfast is ______ it can keep you energetic throughout the day.

1. A.
   when
2. B.
   how
3. C.
   that
4. D.
   whether

Answer 1

C
試題分析：考查從句，從句it can keep you energetic throughout the day不缺少成份，when表示時(shí)間，既起連接作用，又有具體意思；how表示怎么，既起連接作用，又有具體意思；that只起連接作用，沒有任何意義；whether表示是否，既起連接作用，又有具體意思；所以選C
考點(diǎn)：考查從句
點(diǎn)評(píng)：做從句題時(shí)，首先看從句是否缺少成份，如果缺少就在關(guān)系代詞里找引導(dǎo)詞；如果不缺少成份，就在關(guān)系副詞里選擇引導(dǎo)詞