1. The officer in the control tower was very angry when he heard the news, because balloons can be a great danger to aircraft.
    控制塔上的官员得知这一消息后，非常气愤，因为气球有可能给飞机造成极大的危险。

2. Then I heard the master speaking to me.
    这时，听到老师对我说：

3. They had often heard of elephants, but they had never seen one; for being blind, how could they?
    他们常听人说起大象，但从未见过；因为是盲人，怎么看得见呢？

4. That agreed with what I had heard in my home in Tennessee, and I told the old man so.
    这与我在田纳西州的家中所听到的完全一致，我告诉了那位老人。

5. Then I heard a strange sound and my body lost control. Moments later I realized I had hit my head on the board.
    接着我听到一种奇怪的响声，身体就失去了控制。很快我便意识到自己的头部碰到了跳板。

6. The sole standard for being first at something was simply not having heard that somebody else had done it.
    衡量是否"第一"的惟一标准就是没听说别人做过。

7. Nothing was heard but the voice of the master and the scratching of pens on paper.
    课堂里一点声音也没有，只听见老师的讲课声和铅笔在纸上写字的沙沙声。

8. Now and then she heard him say a few gentle words.
    不时地，护士听见他柔声说着什么。

9. Have you ever heard of acupuncture.
    你有没有听说过针灸?

10. Have you heard the latest news?
    你听到最新消息了吗?