A pilot noticed a balloon which seemed to be making for a Royal Air Force Station nearby. He informed the station at once, but no one there was able to explain the mystery. The officer in the control tower was very angry when he heard the news, because balloons can be a great danger to aircraft.
句子讲解：
1、A pilot noticed a balloon which seemed to be making for a Royal Air Force Station nearby.
一个飞行员发现了一只热气球，它像是正飞往附近的一个皇家空军基地。
语言点 seem to be making for somewhere看上去似乎向某地移动
2、He informed the station at once, but no one there was able to explain the mystery.
他马上向这个基地报告了这个消息，但是没有一个人能够解释这是怎么回事。
语言点 no one was able to explain the mystery没有人能够解释这个谜
3、The officer in the control tower was veryangry when he heard the news, because balloons can be a great danger to aircraft.
控制塔里的指挥官听到这个消息后非常生气，因为热气球有可能给飞机造成极大的危险。
语言点 be a great danger to sth.对某物而言是巨大的危险
重点单词学习：
pilot ['pailət] 加入生词本
n. 飞行员;领航员
adj. 试点的
v. 驾驶;领航;试用
例句:
1. It's hard to pilot a boat in rough waters.
在汹涌的海面驾驶船只不容易。
balloon [bə'lu:n] 加入生词本
vi. 激增;膨胀如气球
n. 气球
vt. 使像气球般鼓起;使激增
adj. 像气球般鼓起的
例句:
1. His coat ballooned in the high wind.
他的外套在大风中鼓起。
force [fɔ:s] 加入生词本
n. 力量;武力;军队;魄力
vt. 促使，推动;强迫;强加
例句:
1. Circumstances will force us finally to adopt this policy.
环境将迫使我们最终采取这项政策。
informed [in'fɔ:md] 加入生词本
adj. 消息灵通的;见多识广的
v. 通知;使了解;提供资料(inform的过去分词)
例句:
1. I informed her mother of her safe arrival.
我让他的妈妈知道他安全抵达了。
mystery ['mistəri] 加入生词本
n. 神秘，秘密;奥秘;神秘的事物
例句:
1. How it was done was a mystery.
那件事是如何做的是一个谜。
control [kən'trəul] 加入生词本
n. 控制;管理;抑制;操纵装置
vt. 控制;管理;抑制
例句:
1. The pressure of steam in the engine is controlled by this button.
发动机中蒸汽的压力由这个按钮控制。
aircraft ['εəkrɑ:ft] 加入生词本
n. 飞机，航空器
例句:
1. How does an aircraft engine work?
飞机的引擎是怎样运作的?
