As we all know, there are varieties of resources in the depths of the sea. However,     1     (随着时间的流逝)，some marine creatures have died out. Therefore, marine pollution has been of great global concern.

First of all,     2     (迫切需要) make people aware of the importance of protecting the ocean, because     3     (保护海洋就是保护人类，不定式作主语和表语).     4     (与此同时), we     5     (赞成政府采取有效措施) to keep the balance of nature. No matter how great the difficulty is, we will have the marine resources properly     6     (exploit) and never will we give up protecting the ocean.

Nicholas, intrigued by adventure stories,     1     (出发去滑雪) with his father. They had a wonderful day. When they were to leave, Nicholas decided to go down unusual trails himself. Unfortunately, a fierce snowstorm swept the area and Nicholas was lost. He remembered the story he ever read, in which a man was abandoned in a wild area and had to help himself out. “I would not shrink from danger. It’s time to     2     (我学到的技巧付诸实践了),” he whispered. He determined to     3     (逃命). Although in a subdued mood, he would not retreat.     4     (再三考虑之后), he     5     (全身心地建一个雪洞) to keep himself warm. The next day, he was found by his father, safe and sound.

One day, while Tom was behind the wheel, some yellow vests     1     (分散了他的注意力). It is some volunteers dedicated to environmental protection work who are cleaning up the garbage on the roadside.     2     (相比) those who spit in public and litter about, these volunteers       3     (激励他做一些促进环境保护的事情). On reflection he decided to join the volunteers since the beautiful environment       4     (依靠每个人的贡献).

About 75 percent of the city’s factories and buildings, 90 percent of its homes, and all of its hospitals were gone.     1     covered the ground like red autumn     2    .

With the    1    (发展) of economy, people are    2    (遭受) more and more     3    (自然的) disasters. Due to the strongest typhoon called “Dussuri”, there was a heavy rain in many areas and it caused great losses,    4    (尤其) in the north China. The roads were    5    (覆盖) with water and thousands of houses were     6     (破坏). In case of disasters, we are supposed to keep    7    (镇静的) and try to escape in time.

The bad weather may have something to do with the worsening of environment. People may think that big things must be done to protect the environment. Many forget protecting it begins with small things. For example, it’s a good idea to use reusable bags instead of     8    (塑料的) bags. You can also save electricity by turning off lights before leaving a room. Never use    9    (木制的) chopsticks when you buy takeaway food. All these small things can add up and make a big     10    (差异).

Written Chinese has also    1     which China’s present is connected with its past. People in modern times can read the classic works which were written by Chinese in ancient Times.    2     the Chinese writing system can be seen in the development of Chinese characters as an art form,    3    , which has become an important part of Chinese culture. Today, the Chinese writing system is still an important part of Chinese culture. As China plays a greater role    4    , an increasing number of international students are beginning, to appreciate China’s culture and history    5    .

The air is thin and we have to rest several times on the short hike from camp. To our left, snow-covered mountains    6    that seem almost close enough to touch. On the plain in front of us, we can just    7    a herd of graceful animals. This is why we’re here-- to observe Tibetan antelopes.

In the evening, I drink a cup of tea and watch the stars. I think about the antelopes and what Zhaxi told me.    8     to protect wildlife, but if we really want to save the planet, we must change our way of life. Only when we learn to exist    9    with nature can we    10    to wildlife and to our planet.