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.

    1     (我写信感谢你的及时救援), without which my life couldn’t return to normal.

A few days ago,     2     (一场极其可怕的地震袭击了我的家乡), leaving many houses in ruins.     3     (shock) to find everything buried under the fallen houses, I burst into tears.     4     (世界似乎到了尽头). Thankfully, although you were strangers, you     5     (不遗余力) provide enough food and water for us to survive on. With strong support from the government and your generous aid, a new town was built upon the earthquake     6     (ruin).

I can’t express my gratitude too much.

Yours sincerely,

Li Hua

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.

Suddenly, the aftershock struck, which made the rescue work more difficult. “A nurse in the ward was covered with rubble,” a doctor screamed with horror then. We volunteers rushed to     1     (帮助医生抢救被掩埋在废墟里的护士). Although we were faced with falling rubble from time to time, we focused our efforts on removing the bricks and the rubble that trapped her.     2     (通过我们的共同努力), the nurse was rescued. It was a miracle that she survived the earthquake.     3     (我们的努力和付出是值得的).

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).

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).

While Wang Le was     1     (浏览，填词组) a newspaper, he was shocked to read the news that a great earthquake struck the city. Approximately ninety percent of the buildings     2     (成为废墟，填词组). The metal pipes and taps cracked and the ground was covered with bricks. There was neither     3     (电，填单词) nor water. Many people     4     (使落入险境，填单词) at home suffered a great deal. Fortunately, , the government immediately directed the     5     (拯救人员，填词组) to evacuate the people in danger and put up s    6     (a structure built to give protection) in the open air. Ambulances arrived to provide first aid. In the meantime, the s    7     (the things such as food, medicines, fuel, etc. that are needed by a group of people)provided to the earthquake-stricken area were collected from all around the city.     8     (经过不懈努力，填词组), the whole city began to breathe again and witness a dramatic revival. Wang Le thought it was necessary to learn more about how to prevent the     9     (自然灾害，填词组) from happening and reduce the massive    10     (destroy) caused by them.

Our job is to protect and     1     (使恢复) the natural environment. This includes keeping the original environment from being touched, as well as a    2     new, sustainable ways of feeding farm animals.

You need to work together, and that means communicating with each other clearly and r    3     conflicts with your teammates. Remember, one of the best     4    (策略) is clear communication.

Riley loses her happy core memories and starts to feel lost and helpless. Worried about her, Joy and Sadness try to work together to     5    (确保) she gets her core memories back. Accepting sadness as part of life helps Riley deal with the emotional     6    (复杂性) of growing up.

Ryan needed 2,000 dollars to build the well so he started to ask for help from his classmates and neighbors and persuaded them into d    7     money, indicating that he had the courage and     8    (坚持不懈) to make his dream a reality.

Winton established an office to keep records of the children and then returned to Britain to try to find     9    (暂时的) homes for them. During World WarⅡ, he served in the British Royal Air Force. He left the m    10     in 1954.

Indoor skiing in the desert has become a symbol of Dubai’s status as a w    1    , modern metropolis. Originally a small fishing village, Dubai’s fortunes changed forever with the d    2     of oil in the 1960s. Since then, it has become the largest city in the United Arab Emirntes. But the rapid g    3     has come at a price. To power its cars and air-conditioning, the city has produced large amounts of carbon dioxide (CO2) from f    4     fuels. By 2006, Dubai had one of the I     5     ecological footprints in the world. But now it is making some big c    6    . To reduce its dependence on cars and lower its emissions, Dubai has invested in s    7     energy, green buildings, and a comprehensive public transportation system-Brightly Shining driverless trains now run b    8     the main roads. In addition, all new buildings must meet strict energy r    9    . Smart lighting and cooling systems must switch o    10     when no people are present in a room. New buildings must also use solar panels for water heating.

I'm Li Lei，and it's my honor to give a speech about earthquake prevention.There happened earthquakes in many places recently.The earthquake could cause significant damage.So    1    (如何在地震期间保持安全)has become an important issue.Here are some guidelines.

Firstly，don't be nervous and keep calm.Try to get into     2    (一片远离树木的空地)，buildings，walls，signs，power lines and anything else that might fall on you if you are outdoors.Secondly，if you are indoors，stay there.Quickly move to a safe place in the room such as under a strong desk.    3    (用手和胳膊覆盖你的头和脖子)．The goal is to protect yourself from falling objects.Avoid taking cover near windows，large mirrors and hanging objects.Thirdly,    4    (绝对不要使用电梯)．

Though we can't stop earthquakes,    5    (我们能够减少地震给我们带来的破坏) if we take right measures.