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數學 國中

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(41~43) At some stores, people get stickers or stamps on a card when they spend money there. After they collect enough stickers or stamps, they can get gifts or buy things at low prices. Yesterday after I bought coffee; the clerk stamped on my cellphone. How cool it was! My first time! It looks like a stamp we used in the past, but there are many small dots at the bottom. You touch the screen of your cellphone to tell it what to do, and this is also the way smart stamps work. When people use a smart stamp, they hold the top part of the smart stamp. The small electrical charge from people's hands goes through it to the dots at the bottom. Then, the smart stamp tells your cellphone messages with them. The dots of different stores are in different patterns. no alla lil est sill lo busolos With smart stamps, stores don't have to make stickers or cards, and people don't have to keep those things. Stores can also collect some useful information. For example, how many people come and buy things or what is popular? Are there any other good things about smart stamps? Are there things people need to be careful with when they use them? We can know more after smart stamps become more common. sticker 貼紙 electrical charge 電荷 message訊息 pattern 圖案 ( ) 41 Which picture best shows how electrical charge moves when someone uses a smart stamp? (A) (B) (C) (D) MA ( ) 42 "Are there any other good things... become more common." What did the writer want to say? (A) Not everybody needs to use smart stamps. (B) Many people worry a lot when they use smart stamps. (C) Let's learn more after more people experience using smart stamps. (D) Stamps are not common, so people may think about giving them up. ( ) 43. In the reading, the writer mentioned: a. Why people use smart stamps. b. One new thing in the writer's life. c. How smart stamps work. In what order did the writer mention them? (A) abc. (C) cba. 『著作權,翻印必究 9-15 (B) ba→c. (D) b→ c→a. 三美 mention提及

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自然 國中

請問下面兩題要怎麼算阿

( 再試一次 (A) 1. 某生利用一個穩定熱源做測定比熱的實驗,他各取100 公克的水及某液體分別加熱,其溫度的變化與時間的關 係如右圖所示。若某液體和水在同一時間內吸收相同的 熱量,則此液體之比熱為多少卡/克·℃?(水的比熱 為1.00卡/克·℃) (A)0.625 (B) 0.80 (C) 1.24 (D) 1.60 溫度增加量(C) 16 10- 8 某液體 水 0 5 加熱時間 (A) 2. 某生利用穩定熱源做測定比熱的實驗,各取80公克的水和甲液體分別加熱 C 數據如下表。若水和甲液體每分鐘吸收相同熱量,則甲液體的比熱為多少 卡/克·℃? 081(0) OSI (8) 915. 加熱時間(分) 水的溫度(℃) 甲液體溫度(℃) (A)0.3 0 2 4 6 8 10 易幸 20 23 26 29 32 35 20 25 30 35 40 45 (B)0.5 (C)0.6 (D)0.8 請閱讀下列敘述後,回答3.、4.題: 阿民放學後到便利商店買了一包洋芋片,他看了一下其營養標示,如下圖(一)。 想知道裡面的熱量到底有多少,所以將洋芋片進行生物課教過的燃燒實驗,如下圖 (二)。(1kcal=1大卡=1000卡)新曲 TA2M 日维峰 營養標示 實驗 溫度計 每包 DOTATO |熱量(kcal) 解剖針 136 CHIPS® 蛋白質(g) 水— 1.9 20.90 實驗二 一溫度計 解剖針 甘油 脂肪(g) 8.4 ato | 碳水化合物(g) 13.5 |鈉(mg) •洋芋片 200 ~洋芋片 圖(一) 圖(二) ) 3. 實驗一中,他在錐形瓶中放入200g,25℃的水,並取2.4g的洋芋片進行 燒,如果熱量完全轉換成熱能,加熱錐形瓶中的水,則錐形瓶中的水會呈球 麼狀態? (A)上升至50℃ (B)上升至75℃水 (C)上升至93℃ (D)水會沸騰 TA TA CARHO 619 ( ) 4. 實驗二中,阿民換成200g、25℃的甘油進行和實驗一相同操作方式,則錐 瓶中的甘油會呈現什麼狀態?(甘油沸點290℃,比熱0.58卡/公克•°℃) (A)上升至93℃ (C)上升至142.24 ℃ (B) A (B)上升至117.24℃ (D) (D)甘油會沸騰

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英文 國中

第四題怎麼寫?

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