A．Please hang on

　　B．Please hang off

　　C．Sorry, he isn't here now

　　D．Sorry, I'm afraid you have the wrong number

　　解析：选A　句意："我可以和史密斯先生通话吗？""请稍等，我去叫他接电话。"hang on表示"别挂断电话，稍等"。

　　5．The old workers are doing their best to pass ________ their techniques to the younger generation.

　　A．off B．on

　　C．away D．through

　　解析：选B　句意：老员工在尽力把他们的技术传给年轻一代。pass off"逐渐消失，对......不予理睬"；pass on"往下传"；pass away"去世"；pass through "穿过，通过，经历"。

　　6．We must keep our room clean. Dirt and diseases go ________， you know.

　　A．from time to time B．hand in hand

　　C．step by step D．one after another

　　解析：选B　句意：我们必须保持房间干净，你知道，灰尘和疾病是相伴而来的。hand in hand"手牵手，相伴"。

　　7．Jack described his father, who ________ a brave boy many years ago, as a strong­willed man.

　　A．would be B．would have been

　　C．must be D．must have been

　　解析：选D　句意：杰克把他爸爸描述为一个意志坚强的人，多年前他准是一个勇敢的男孩子。must have been 是对过去事实的肯定推测；must be是对现在事实的肯定推测；would be是过去将来时；would have been是虚拟语气，显然D项正确。

　　8．Speaking of all the songs he has written, I think this is probably his ________ one.

　　A．better­known B．well­known

　　C．best­known D．most­known

　　解析：选C　句意：说到他写的所有歌曲，我认为这可能是最著名的一首。well­known"著名的"，最高级为best­known，故选C。

　　二、勤练语篇阅读，多练自能生巧

　　Ⅰ.完形填空

　　Beginning to learn gymnastics even before she could barely walk, Svetlana had always dreamed to enter the Olympics scene some day.

However, her __1__ ended in the car on the winding road when a lorry appeared out of