解析：选D　听着年轻人讲话，女儿慢慢地不哭了。

　　15．A.surprised B．worried

　　C．frightened D．interested

　　解析：选A　自己想尽办法都不能让女儿停止哭，而这个年轻人做到了，对此作者感到惊讶。

　　16．A.terrible B．sleepy

　　C．energetic D．poor

　　解析：选B　在女儿睡着的时候，年轻人把孩子递给了作者。

　　17．A.experience B．adventure

　　C．journey D．distance

　　解析：选C　在漫长的旅途中，年轻人不断地帮助作者。

　　18．A.helped B．encouraged

　　C．watched D．saved

　　解析：选A　根据下文"He fed my baby, sang to her and told her stories."可推断出年轻人是在帮作者。

　　19．A.trouble B．rescue

　　C．world D．stage

　　解析：选B　作者到达目的地的时候，再次感谢了这位帮助她的年轻人。come/go to sb.'s rescue表示"帮助某人"。

　　20．A.only B．never

　　C．still D．ever

　　解析：选C　多年以后，作者依然还记得在火车上帮她忙的那位年轻人。

　　Ⅱ.阅读理解

　　External Bleeding

　　Apply direct pressure. Place a clean, folded cloth over the injured area and firmly apply pressure. If blood soaks through, do not remove it. Instead, cover that cloth with another one and continue to apply pressure to the wound for 7～10 minutes. If the bleeding is from the ear, place a clean bandage over the ear, lay the victim on his side, and allow the blood to drain out through the bandage.

Elevate the injury. Position the wounded part of the body above the level of the heart if possible while you apply direct pressure. Know the pressure points. If direct pressure and elevation don't sufficiently slow the blood flow, find a pressure point. Large arteries (动脉) found close to the skin's surface supply blood to the head and to each arm and leg. The most common pressure points used during the first aid are located in the upper arms and in the creases (皱纹) above the upper legs. Apply pressure to the closest pressure point to the wound so that the artery is pressed between your fingers and the bone directly behind the artery. If using the pressure point on a leg, you may need to use the heel of your hand instead of your finger.