高中 解答

Jane: I don’t see Judy today. _________ she sick? Meg: Yes. She _______ a cold and can’t come today.

Cindy: Where ________ you come from? I think you’re from Australia, right? Ted: No, I’m from the US.

We need to ________ the picnic plan. A typhoon is coming, and it might rain all week.

Jacky ______ twice a day. He enjoys doing yoga(瑜珈) and going jogging.

Look at the poor birds over there. Let’s ______ them from the cage.

Your room is too _____. You must _____ it ______ every day.

Kevin still bites(咬) his nails when he feels nervous(緊張的). His teacher says, “_____.”

Tom: I am not good at math. Tim: _____ every day and you can get better(更好的) grades.

My teacher says to us, “______ makes perfect(完美).” _____ give up(放棄) your dream.

Before you make a big decision(決定), remember to think ____ before you leap(跳).

A: Oh, no! My computer doesn’t _____. What ____ I do? B: Don’t worry. I can fix(修理) it.

Boys, it is raining. Go inside the house _____ or you’ll catch a cold.

A: How do you like Fanny’s Steak House? B: The food and service there is _____. I will never go there again.

Everyone, dinner is ready. You can come and have it ______.

A: Why aren’t you reading today’s newspaper, honey? B: There is too much ______ in it.

______ play video games. Take _______ with me now.

There are so many new _____ in the office. I need more time to remember who is who.

Of all his body parts, Nick likes his ______ best(最). They make his smile wonderful.

如圖是一個矩形,四邊各可以用 x 及 y 表示,則此矩形的面積是多少平方單位?

甲、乙兩人同時解聯立方程式  ,甲看錯 b,解得 x=2、y=1;乙看錯 a,解得 x=4、y=2。若無其他計算 3 x+by=18 上的錯誤,則 a+b=?

魯夫使用代入消去法解二元一次聯立方程式  ,其步驟如下: -2 x+y=7 步驟 1:將 x=2y-3 代入-2x+y=7 步驟 2:得到-2(2y-3)+y=7 步驟 3:化簡得到-4y-6+y=7 13 35 步驟 4:得到-3y=13,y=- ,x=- 3 3 請問魯夫在哪一個步驟開始發生錯誤?

在科學實驗室中,研究小組正在進行數學建模,設計一個模型來描述物體運動的路徑。他們提出了一個絕對值方程式: │3x+y-7│+│x-y-1│+│2x+y+k│=0,並要求計算 k 的值。請依據以下選項,判斷正確答案。