镁是一种用途广泛的金属材料，目前使用的镁主要是从海水中提取的.其主要流程如图：上述转化过程中未涉及到的基本反应类型是()
解：从流程图中可知有下列反应：氯化镁和石灰乳的主要成分氢氧化钙反应生成氢氧化镁和氯化钙，其反应的化学方程式为：MgCl2+Ca(OH)2═Mg(OH)2↓+CaCl2;氢氧化镁和盐酸反应生成氯化镁和水，其化学方程式为：Mg(OH)2+2HCl═MgCl2+2H2O;是两种化合物相互交换成分，生成另个两种化合物的反应，属于复分解反应;氯化镁在通电的条件下生成镁和氯气，其化学方程式为：MgCl2 Mg+Cl2↑，是一种物质生成两种物质的反应，是“一变多”的反应，属于分解反应;故答案为：BC.
书面表达
你校英语社团面向毕业生举行以“成为更好的自己”为主题的征文活动，请你结合自身经历，从"make friends", "have a healthy lifestyle", "develop good study habits", "take up a new hobby", "be independent” 五个方面任选一至两项，写一篇英语短文投稿。
要求:
1.词数80-100(开头已给出，不计入总词数);
2.文中不得出现真实姓名、校名等相关信息。
At the beginning of a new life, I'm going to make myself better. __________________________
As a student, what can you do to live an environment-friendly life?文中提到的除外。
① ②
How does the writer live a more environment-friendly life?文中任意两种即可。
① By___ _ ② By
从文中找出与划线句子(A)意思相近的句子。
阅读下面日记，完成小题。
Saturday 29 May 
Something has changed my mind today. I saw some pictures of the sea animals influenced by the rubbish in the sea. I can't get that out of my mind. So, I am going to try and live a more environment-friendly life. (A)Each day I will keep trying to change one thing that I do to protect the earth.
Monday 31 May 
Today I have decided to stop using plastic wrap (塑料保鲜膜) around the sandwiches that my mom makes for my lunch. Plastic wrap keeps my sandwich nice and fresh, and it's easy to throw away. However, I come up with a better idea. I can use a glass container (容器) instead of the plastic wrap. So, I can reuse it the next day for lunch. And I told this to my classmates too. I hope to see more reusable containers at school tomorrow.
Thursday 3 June 
Good news, when I took out my glass container, I noticed more of my classmates bring their home-made lunch in their own containers to school! Tonight, when I was shopping with my mom, I found a shop which doesn't provide any plastic bags! The idea of the shop is that you bring your
own cloth bags. In this way, there are no plastic or paper bags to throw away at home. When I left the store with the buys in my own cloth bags, I felt very proud of myself. (B)Tomorrow I'm taking the bus to school to save energy.
Friday 4June
What a wonderful bus ride to school today! Well, it's been a week since I decided to try to live a more environment-friendly life. The unbelievable part is that I can actually see a difference in the garbage(垃圾) in my home. The garbage bag is lighter and only one third filled. I feel excited that I have made a real difference. I'm going to keep saving the world one day at a time.
Why did the writer decide to live a more environment-friendly life?
根据句意和所给汉语完成句子。每空一词。（每小题1分，共5分）
1. Many young talented ____（音乐家）gave a wonderful performance on May 4th.
2. Hard-working spirit is stressed ____（在...之间）students in schools.
3. Here are our school uniforms. ____（他们的）are over there.
4. Lots of ____（贵重）objects are on show in the museum.
5. Many classic Chinese poems are ____（广泛）spread in the world.
用所给词的适当形式填空。每词限用一词。
catch, discuss, pull, down, climb, fight |
1. Many old houses around our school ____ last year and a large green area appeared.
2. With strong team spirit, the Chinese women’s volleyball players ____ for the national honor at the coming Olympics.
3. Tom ____ the volunteer program with his friends at this time yesterday.
4. The smart robot in the restaurant always ____ the customers’ eyes.
5. It’s reported that the temperature ____ quickly since this morning.
根据短文内容，从选项中选出能填入文中空白处的最佳选项，选项中有一项为多余选项。
Nothing sounds better than a swim on a hot summer day. However, many teens, including some who are good swimmers drown (溺水) each year. When someone is drowning, it's often silent and happens very quickly. 1.____. Here are some tips on how to prevent drowning when you go for a swim.
Never swim alone - even for a moment. You should go swimming with adults and make sure that they are able to keep you safe. 2. ____.
Enter the water carefully and feet first. Go in feet first so that you can know how deep the water is. Diving into unsafe water can lead to serious injuries.
3. ____. Take some time to stretch (拉伸) your body before you enter the water. Get your body prepared and safety will surely follow.
Learn lifesaving skills. 4. ____. CPR is one of the lifesaving skills that can help others who are near drowning.
Choose swimming areas carefully. 5. ____.Choose the areas with safety facilities (设施) and lifeguards
Remember: In case of emergency, it's always important to call for help first! All in all, keep swimming safety in mind when you are in and around the water.
A. Do body exercise
B. But it can be prevented
C.Warm up before swimming
D.It's important to have an adult nearby watch for danger
E. Don't go to the swimming areas that you don't know well
F. Many schools and training centers now offer classes to learn these skills
Where is the passage most likely from?
Grandpa has influenced Cindy in a positive way by_________.
