With our already busy lives, finding time to exercise can be impossible. So maybe it would help if there was ‘a best time' to exercise.

There are clear benefits to exercising in the morning. Many of us have more free time than later in the day, and it may be easier for us to keep a morning plan. A study found that people could sleep better when they exercised in the morning or had the physical activity during the whole day. Exercising on an empty stomach（空腹）before breakfast could also have less fat（脂肪）and keep healthier.

So, good news for early birds, but what if you're not a morning person? Working out in the afternoon or evening is also good, but different. For example, your body's ability reaches the highest level in the afternoon, according to a 2010 study. Also, in the afternoon and evening, your mind is the quickest, and your heart rate and blood（血）pressure are lowest, and you aren't getting hurt（受伤）easily when exercising.

But can this happen? Deciding on if you are a man or a woman? Our bodies are different, after all, so the best time to exercise may be different too. Want to reduce（降低）your blood pressure and you are a woman? Exercise in the morning. Want to improve your heart health and you are a man? Evening is better for you. But, a 2022 study found that it's both OK for them to exercise at either time of day.

So what time is best? It seems the answer is: whatever time is best for you!

EMERGENCY? WHAT EMERGENCY?

An emergency service (紧急服务) should be like that: a service that you phone in an emergency. You might need to call the police if you're in a car accident. But some people phone the emergency services for some unimportant reasons (原因). {#blank#}1{#/blank#}

Here are some examples we heard about from emergencycentres all over the world.

1 'I ordered food from a Chinese takeaway and it didn't come. I'm so hungry! Can you tell them to hurry up, please?'

2 'My children are making such a loud noise and I can't think about things. {#blank#}2{#/blank#}

3 There's a black cat in my garden. Black cats are such unlucky animals. Can someone please come and take it away?'

These calls are funny to read about, but they can have very serious consequences (后果) . 'Every call takes about a minute,' said one man who works in emergency services. 'Maybe that doesn't sound a very long time, but in that one minute, other people are calling who really have an emergency. And for them, a minute might be really important.'

So let's get really serious: {#blank#}3{#/blank#} And of course, remember that you should never phone them with information that's untrue!

第二节请结合第一节内容，回答下面的问题。

When can we call the emergency services? {#blank#}4{#/blank#}

注意：

1. 可在思维导图内容提示的基础上适当拓展信息；

2. 词数：不少于100词；

3. 不得透露学校、姓名等任何个人信息，否则不予评分。

I have changed

As two years of junior high school life has gone by, I have changed a lot. 

 Volunteering in your community gives you a chance to give back. You' ll feel proud that you are volunteering your time, and a local organization will benefit, too. There are some tips(建议) you can follow to help you do your volunteer jobs well. You should choose a volunteer job first and pay attention to the volunteer job you feel strongly about. When you decide to volunteer, you shouldn't accept the first volunteer chance you come across easily, because you' re likely to be happier and volunteer longer at an organization that supports a job you care about. So you may need to find a volunteer job that makes full use of your abilities or skills. Then, treat the volunteer job like a real job or your study task. That means being serious. Spend some time preparing for the interview, much as you would prepare for a job interview. During your volunteering, you should take responsibility (责任) for everything you do instead of giving up. You may even complete any needed training to help you volunteer well, such as learning some useful skills to help others. Being active and creative is also necessary. Both of the two traits(特质) will help you be great volunteers.