根据短文内容和首字母提示，填写所缺单词。
       The development of the English language took a giant step in 1607. Three small British ships c____  the Atlantic Ocean. They began to call areas of their new land by words borrowed from the native people. For example, many of the great r____ in the United States are taken from American Indian words. The Mississippi, the Tennessee, the Missouri are examples. This borrowing or adding of foreign words to English was a w____ of expanding（扩大）the language. The names of three days of the week are good examples of this. The people from Northern Europe honored three gods with a special day each week. The gods were Odin, Thor and Freya. Odin's-day became Wednesday in English, Thor's-day became T____  and Freya's-day became Friday.
     Experts cannot explain many English words. For h____  of years, a dog was called a “hound.” The word is still u____  but not as commonly as the word “dog.” English speakers just started using it. Other words whose origins are unknown i____ “fun,” “bad,” and “big.”
    English speakers also continue to invent n____  words by linking old words together. A good example is the words “motor” and “hotel.” Many years ago s____  linked them together into the word “motel.” A motel is a small hotel near a road where people travelling in cars can stay for the night.
    Other words come from the f____  letters of names of groups or devices. For example, the North Atlantic Treaty Organization is usually called NATO.

如图所示的四个场景中，主要依靠空气浮力而“飞天”的是（　　）

根据短文理解，选择正确答案。

    I was feeling really down because my long-time friend had died. Then I started a six-week volunteering at a nursing home all day even Saturday. My duty was to serve the meal and clean up. One day I was told to go to Room 117 to make sure the patient was all right. I found a boy of eight sitting in bis bed watching a movie. I was shocked to see a child in this seemingly forgotten nursing home for the old. He was so small and weak that you had to look closely to find him. I grabbed his medical chart and found out :he had a terminal（绝症的) illness.

    We started to talk, and I found out that his family rarely visited, and all he did every day was watching TV I wanted to cry for him, and for my lost friend. As we talked, he had a smile on his face, and I asked him why and how he still managed to stay happy.

    He thought for a moment, and then said that too many people were dead even before they died. They walked around feeling that God had cursed(诅咒) them and they had nothing to live for.

    The boy said that he would not be like that. He woke 'every morning thankful to see another sunrise. He kept his window open so that he could smell the flowers and feel the heat of the sun. He also said that he had hope.

    "Too many people haven't seen much of that around here." He said, "Life is full of hope and we need to live life before it is gone."

    I don't know what happened to him. I guess he passed away, but his lesson lives on. I now wake up and live each day to the fullest. The key to life is not money or fame, but the lesson we learned from it.

在探究“压力的作用效果与哪些因素有关”的实验中：