Festivals are celebrated all around the world. They have a wide    1    of origins, such as the seasons of the year, religions, famous figures, and important     2    . Every festival has its different customs and unique charms. However, no matter     3     different they may seem, all over the world, the spirit of sharing     4    , gratitude, love, or peace is common in all festivals.They reflect people’s wishes, beliefs,faiths, and     5     towards life.Today was my first day back in San Francisco after camping in the Redwood Forest. I have to     6     that It definitely feels good to be back in the city again which was able to rebuild itself after the earthquake that     7     (occur) in 1906. There are a wide range of beautiful old buildings—many sitting on top of big hills,     8     great views of the city, the ocean, and the Golden Gate Bridge.My hotel is near downtown in the Mission District, one of the     9     parts of the city. In fact, an art movement called the ‘‘Mission School’’ started here. It’s     10     by graffiti art and comic art.

An advertisement     1     (use) words and pictures to persuade people to buy a product or service, or to believe in an idea. There are two main     2     (type) of advertisements—commercial advertisements and public service advertisements (PSAs). A commercial advertisement is one which someone has paid for to advertise a product or service. PSAs are often run     3     free, and are meant     4     (educate) people about health, safety, or any other problem     5     affects public welfare.

a. At that time people would     1     if food was difficult to find, especially during the cold winter months. Today’s festivals have many     2     some are religious, some seasonal, and some for special people or events.

b. His cola was    3     and cold, and his ice cream was made of milk, cream and delicious fruit. “Nothing could be     4    ” he thought.

c. —And it was the ship that brought you to England.

—Yes. The fact is     5     I earned my passage by working as an unpaid hand, which     6     my appearance. I went to the American embassy to seek help, but…

d. Water had also appeared on other planets like Mars but,     7     the earth, it had disappeared later. It was not immediately obvious that water was to be     8     to the development of life.

e. Going eastward, you will pass mountains and thousands of lakes and forests,     9    wide rivers and large cities. Some people have the idea     10     you can cross Canada in less than five days, but they forget the fact that Canada is 5500 kilometers from coast to coast.

For a long time, our environment has been damaged because humans have been careless. Some people are concerned about increasing production p    1     rather than protecting nature.

As a c    2    ,they damage the Earth       3     (无意间)by building new channels in the sea and factories on the land, and by pouring chemical waste into rivers casually without p    4    

However, many people are p    5       in nature conservation. They argue that such immoral behavior may cause a c    6    .To achieve sustainable development, they have g    7     to stop overuse of natural resources. Besides, they have conducted various activities to s    8       public awareness of environmental protection.

In a word, humans can only win by t    9     the attitude towards nature. Only in this way can we realize our i    10     dream that everyone can enjoy healthy and happy lives without the environment around them suffering.

Hunting and fishing have directly     1     the world’s animal populations. Some people hunt animals for food: whale meat is eaten in some parts of the world. Some people hunt animals for fashion: animal skin is used to make costs and bags. Still others hunt animals just for fun: deer are     2     and shot by people who enjoy the     3     of the sport.

Human activities that have     4     effects on animals can be just as harmful. When we build farms or factories, we destroy animal     5     and leave many animals with     6     to live, or no food to eat. We can also put animals in danger without ever entering their habitats. Air, water, noise and light pollution can all have a deep and     7     influence quite far from their source.     8     due to pollution     9     by ship traffic and other human activities, the dolphin population has dropped greatly. As the human population continues to grow,     10     does the effect we have on animals.

Tibetan antelopes live on the plains of Tibet, Xinjiang, and Qinghai.    1    them move slowly across the green grass, I’m struck by their    2    . At the same time, I’m also reminded    3    the danger they are in. They are being hunted,    4    , for their valuable fur.

Zhaxi, a villager from Changtang, works at the Changtang National Nature Reserve. “We’re not trying to save the animals,” he says. “    5    , we’re trying to save ourselves.” The 1980s and 1990s were bad times for the Tibetan antelope.    6    population dropped by more than 50 percent. Hunters were shooting Antelopes to make    7    . Their    8    were becoming smaller as new roads and railways were built.

In order to save them, the Chinese government placed them under national protection. The measures were    9    . The antelope population    10    and in June, 2015, the Tibetan antelope was removed from the endangered species list.