与人类所处的依靠氧气和光合作用的生物圈不同,深海的“黑暗生物圈”的生存并不依赖阳光,而是以地热能为基础,通过化合作用将硫细菌转化为有机质。潜入深海,可以让我们看到一个常识以外的世界,这表明
—When are you going to get your ears ________? —I am going to have Ms Li ________ my ears this weekend.
—Mary was heard ________ just now. What happened? —John was telling a joke.
Our school ________ in the last five years.
Only by studying hard ________ improve her English soon.
Many teenagers have hobbies. But sometimes they can get ________ of schoolwork.