歡迎閱讀《週末科學版》！我們每週五都要為你介紹可以在家中進行的有趣科學實驗。你可以在《科學日誌》中 記錄自己做了哪些活動，這樣就可以將所學的紀錄下來，比較這些結果，也許還可以利用它們來設計新的實驗！先看一下《科學日誌》的點子再開始吧。展開實驗之前，記得要獲得大人許可喔！
Have you ever wanted to write a secret message that only your friends can read? You can do so using a lemon, milk, vinegar or orange juice.
What you will need:
One or more of the following: lemons, milk, orange juice or vinegar
PHOTO: MICHAEL KEARNEY, TAIPEI TIMES
A heat source, such as a 100-watt light bulb
White paper
Cotton swabs
Glasses
Water
▲ Cut one of the lemons and squeeze some of its juice into a cup. Mix in some water.
▲ Put some milk, orange juice and vinegar into separate cups and mix them with water.
▲ Put only water into another cup. This will be your control.
▲ Dip a cotton swab into one of the cups, and use it to write on a piece of paper. Label the piece of paper so you know what kind of “ink” you used to write on it.
▲ Do the same with all your other kinds of “ink.” Use a different cotton swab for each one.
▲ Let the pieces of paper dry until you can’t see your message.
▲ Have a friend hold the piece of paper up to the light bulb. The message should appear. Note that you need to use a hot enough light bulb. Be careful not to burn yourself or the paper. Have an adult help you with this part. Don’t forget to record what happens in your Science Journal.
(MICHAEL KEARNEY, STAFF WRITER)
你曾經想要寫下一個只有你的朋友可以看到的秘密訊息嗎？你只要使用一顆檸檬、牛奶、醋或柳橙汁就可以做到囉。
所需材料︰
一個或多個下列物品：檸檬、牛奶、醋或柳橙汁
一個加熱源，如一百瓦的燈泡
白紙
棉花棒
玻璃杯
水
▲ 切一顆檸檬，把汁擠到一個杯子裡，再加水攪拌。
▲ 分別將牛奶、柳橙汁和醋倒入三個不同的杯子裡，再加水攪拌。
▲ 再拿一個杯子裡面只裝水，這是你的對照組。
▲ 把一根棉花棒放到其中一杯裡蘸濕，然後用它在紙上寫字；在紙上標記你所使用的「墨水」種類，以免混淆。
▲ 使用不同種類的「墨水」重複上述步驟，每次都要換一根棉花棒。
▲ 等紙上的墨水乾到看不見所寫的訊息。
▲ 請一個朋友把紙放到一個燈泡前面，你剛剛寫的訊息應該就會顯現出來。注意！燈泡一定要夠熱才行，另外請小心不要燙到自己或是燒到紙張；請一個大人從旁協助這個步驟。別忘了在《科學日誌》裡記錄下結果。
（翻譯︰袁星塵）
Computex, Asia’s biggest electronics conference, kicked off Monday in Taipei, and as in years past drew industry chieftains from Nvidia Corp.’s Jensen Huang and Qualcomm Inc.’s Cristiano Amon to Young Liu of Foxconn, which makes the bulk of the world’s iPhones and Nvidia servers. But while last year’s event was a celebration of the post-ChatGPT AI boom, executives this time are likely grappling with the uncertainty of the Trump administration’s effort to reshape the global trade order — disrupting a decades-old model for tech manufacturing. This year’s exhibition will of course feature the hardware required to bring artificial intelligence to life.
For many people, allergies are an all-too-familiar annoyance. The constant sneezing, itching, and watery eyes are just a few clear signs of allergies, which is a surprisingly common condition affecting millions worldwide. But what exactly triggers these reactions, and how can we cope with them? Allergies arise from a misunderstanding between our immune system and seemingly harmless substances. Under normal circumstances, the immune system acts as our body’s personal bodyguard, diligently identifying and eliminating threats like viruses and bacteria. However, in individuals with allergies, the immune system mistakenly identifies certain substances, called allergens, as invaders. This triggers a reaction, leading to
A: South Korean supergroup BTS member J-Hope, EXO member Xiumin and other various artists are set to tour Taiwan. B: Is J-Hope the first BTS member to visit as a solo singer? A: Yup, he’s going to stage two shows in Taoyuan over the weekend. B: All BTS fans, nicknamed “ARMY,” must be so happy. I wonder when the seven-member group can finally stage a comeback again. A: Well, the good news is the five members currently performing military service will all leave the army next month. So the fans’ long wait is about to end. A: 南韓天團防彈少年團BTS的J-Hope，和EXO的Xiumin等多位熱門歌手最近都要來台開唱。 B:
1. 眾所皆知，資訊產業是我國經濟的基礎。 ˇ As everyone admits, the IT industry is the backbone of our economy. χ As everyone admits that the IT industry is the backbone of our economy. 註：這裏 as 作關係代名詞，引導從屬子句。誤句多了 that， IT industry is. . . 就變成從屬句，欠缺了主句，結構上錯誤。又如： As my friend pointed out, necessity is the mother of invention. As is known to all, grammar is not the only important thing in language study. 2. 她心情總是非常好。 ˇ She is always in a good mood. χ She always is in a good mood. 註：always, often 一般放在行為動詞之前，連繫動詞、助動詞之後： He always behaves well. He is always happy and gay. He is always reading. 其他用法類似的副詞，還有 still、also、hardly、seldom、never 等。 3. 你看！他還在寫報告呢。 ˇ Look! He is still working
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