Without the sun, no living thing could survive on Earth, including humans. The sun allows food to grow and helps your body produce vitamin D. Why, then, does this life-giving star also make you feel tired? Perhaps you’ve wondered this after spending a day in the sun, and ending up completely exhausted.
There are several reasons why direct sunlight tires you out. The first is that your body doesn’t want to heat up. Therefore, it has to use a lot of energy to cool itself down and maintain its ideal temperature, 37°C. It does this by sending blood to your skin’s surface and by sweating. If you feel extremely tired in the sun, it’s a sign that it’s time to take a rest and cool down lest you suffer heatstroke or even die.
Another factor is dehydration, or lack of water. When you sweat a lot, your body loses water. As a result, your blood becomes thicker, which makes it harder for your heart to pump, meaning that less oxygen will be delivered to your body. This reduction of oxygen will make you feel even more tired. This is why it is so important to drink lots of water when you spend time in the sun. Yet another factor is sunburn, which is your skin’s reaction to the UV (ultraviolet) rays in sunlight. Your skin turns red as a form of protection, but this process is also tiring for your body’s immune system.
Photo courtesy of Shutterstock 照片：Shutterstock提供
As you can see, the sun is both your enemy and friend. Exposing yourself to its warming rays on a daily basis is good for you. But tiredness is your body’s way of telling you when it has had enough sunlight for the day.
What Did You Learn?
1. What is the main idea of the passage?
(A) Sunburn is a sign that your body is healthy.
(B) There are health benefits to getting enough sunlight.
(C) Any direct exposure to the sun is bad for your body.
(D) Tiredness serves as a warning that you’re getting too much sun.
2. Which of the following is NOT a reason why the sun tires you out?
(A) It forces your body to use energy to avoid overheating.
(B) It makes your skin burn, which requires energy.
(C) It increases the level of oxygen in your blood.
(D) It causes a reduction of water in your body.
3. Why does the author call the sun an enemy and a friend?
(A) Sunlight feels warm but actually cools your body.
(B) The sun is good for you, but it can also be harmful.
(C) People want to enjoy the sun every day but shouldn’t.
(D) The sun actually does more harm than good to humans.
答案：1. (D) 2. (C) 3. (B)
Words in Use
1. survive vi. 存活、生存
Most underwater organisms cannot survive on land.
2. sweat vi. 流汗、出汗
After running for five minutes under the sun, the students started to sweat.
3. extremely adv. 非常地、極端地
Molly was extremely excited when she found out that her favorite singer won the award.
4. lest conj. 以免（與助動詞should並用，should可省略）
Luke always takes the first bus to work lest he (should) be late.
5. suffer vt. 遭受、蒙受（一時的痛苦或損失）
The farmers suffered great losses because of the typhoon.
1. end up + 形容詞 結果／最後…
Larry invested all of his money in a company and hoped to make a fortune, but he ended up poor.
2. tire sb out 使某人筋疲力盡／疲憊不堪
Climbing such high mountains really tires me out.
3. heat up 變熱；加熱（溫度）
I bought a waffle maker last week, but it won’t heat up after I used it twice.
4. cool... down / cool down... 使…變涼／降溫
Jerry turned on the air conditioner to cool down his room.
5. lack of sth 缺乏…
Lack of experience was the main reason why Trevor didn’t get the job.
A: According to Google, the most searched place in Taiwan is the Dongchi branch of 7-Eleven in Changhua County’s Lugang Township. B: I would have thought it would be Taipei 101. A: Taipei 101 is the 17th most searched destination. Other locations in the top 10 include Taitung County’s Dawu Township, Baishatun Gong Tian Temple in Miaoli County and Nantou County’s Wuling mountain range. B: That’s great. I’ve been meaning to travel to Taitung for ages. A: 根據Google，台灣熱搜地點第一名，是位於彰化縣鹿港鎮的7-Eleven 東崎門市。 B: 我還以為會是台北101。 A: 台北101排在第十七名，其它像台東縣大武鄉、苗栗縣白沙屯拱天宮、南投縣武嶺都是前十名的景點。 B: 太棒了，我一直很想去台東玩。 （Translated by Edward Jones, Taipei Times／台北時報張聖恩）
電價費率審議會登場，全台連續四年凍漲的電費，在全球燃料價格攀升和烏俄戰爭等因素影響下，將調整電價方案。然而剛進入炎熱的夏季，又是用電的高峰時期，要如何節能省電呢？本次就讓我們來看既環保又省荷包的小撇步，還能學會超實用英文喔！ 1. 在夜晚使用家電 Run appliances that produce heat at night — when it’s cooler. We’re talking appliances like your clothes drier, dishwasher, and oven. (Fox29) （在晚上氣溫較涼爽的時候，使用會產生熱氣的家電用品，例如烘衣機、洗碗機和烤箱。） appliance (n)「電器」是多益測驗的高頻字彙，通常出現在採購、製造、房地產等情境，描述microwave oven「微波爐」、dishwasher「洗碗機」等household appliances 或是 home appliances「家電」，經常搭配動詞install「安裝」。廚房的家電中，較為省電電器應該就是微波爐，或許減少使用瓦斯爐、烤箱對省電將有相當的助益。 According to the advertisement, the apartment is equipped with state-of-the-art appliances.（根據廣告，這間公寓備有最先進的家電。） 2. 拉起窗簾降溫 Simply closing blinds and curtains, which act as a layer of insulation can reduce heat in your home.（拉起窗簾和百葉窗做為絕緣體，可降低家中的熱氣。） insulate (v)「阻隔；隔離」通常用來描述隔絕噪音或氣溫，例如冬天時適當的insulate「隔絕」冷空氣，可以避免家中溫度太低。許多冬天穿的厚外套經常會有insulation「防風層」可以阻擋冷空氣，達到保暖的效果。 You can bring down the energy use and cost if you properly insulate your home. （房子適當的隔熱可以降低能源使用和費用。） 3. 自動調溫器 Programmable thermostats can be set, so that your air conditioner run less when you’re sleeping or when you’re at work. （設定自動調溫器，讓你在睡覺或工作時使用少一點的冷氣。） programmable「可編程的」來自program一詞，當動詞時解釋為「設定；編寫程式」，當名詞時則有許多不同的意思，例如「程式」、「節目、節目單」或「計畫、方案」，因此程式編寫可以用programming，「程式設計師」就是programmer，但是要注意的是programmer 發音時的重音是在第一音節，不要念錯。 The information regarding the newly launched recycling program is
A: Are there any other “hot” search locations? B: Various train stations across the nation and places that hit the headlines also made it to the list. A: OK then, let’s begin at the No. 1 place on the list: Lugang Township. B: Lugang Old Street is a great place to explore, and there are lots of delicious things to eat. I’ll book the transportation right away! A: 還有哪些熱搜地點呢？ B: 其它像各地的火車站，及重大新聞的發生地點也都榜上有名。 A: 那我們就從榜首鹿港鎮開始吧。 B: 鹿港老街好逛又好吃，我馬上訂車票！ （Translated by Edward Jones, Taipei Times／台北時報張聖恩）
The US Supreme Court has ruled there is no constitutional right to abortion in the US, upending the landmark Roe v Wade case from nearly 50 years ago in a rare reversal of long-settled law that will fracture reproductive rights in America. Since the US Supreme Court’s Roe v. Wade decision legalized abortion nationwide in 1973, the issue has become one of the defining fault lines in US politics, with Democratic politicians firmly supporting abortion rights and Republican lawmakers lining up in opposition. In 1973 the lines were more blurred. Republican and Democratic voters were equally likely to say abortion should be