【題目】關(guān)于木炭和紅磷在氧氣中燃燒的反應(yīng)，說法不正確的是( )。

A．反應(yīng)條件都是點(diǎn)燃 B．都是化合反應(yīng)

C．都是氧化反應(yīng) D．生成物都是氣體

【答案】D

【解析】

試題分析：木炭在氧氣中燃燒時(shí)生成無色無味的氣體二氧化碳，紅磷燃燒時(shí)形成濃濃的折煙（生成物是呈白色固體小顆粒的五氧化二磷）。

練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目：初中地理 來源： 題型：

【題目】 補(bǔ)全對(duì)話 閱讀對(duì)話，從每題A、B、C、D四個(gè)選項(xiàng)中，選出一個(gè)最佳答案完成對(duì)話。（5分）

Rick: Hello, Rick speaking.

Judy: Hi, Rick. ____1____ You called me this morning, right?

Rick: Oh, Yes. I called you at about nine, but you didn’t answer.[

Judy: ____2____ I bought something for my trip to Guilin.

Rick: Are you going to Guilin? It’s a beautiful city in China.

Judy: Yes. ____3____

Rick: Well, I’ll have a party on Friday evening. Would you like to come?

Judy: ____4____ My plane will take off at 6:00 p.m. on Friday.

Rick: It’s a pity that you can’t come! ____5____

Judy: Thank you very much. Bye!

Rick: Bye!

1. A. This is Judy. B. Let’s go home.

C. He’s talking. D. Glad to see you.

2. A. Math is too hard for me. B. They can’t use the computer.

C. I was shopping at that time. D. We’ll go to the supermarket.

3. A. Have you been there before? B. Why did you call me?

C. Do you know Tom’s birthday? D. Why not go with me?

4. A. No problem. B. I disagree.

C. I’m afraid not. D. I’d love to.

5. A. See you at my party. B. It’s very boring.

C. Let’s meet at eleven. D. Have a good trip!

查看答案和解析>>

科目：初中地理 來源： 題型：

【題目】David and his brother Greg don’t go to school(上學(xué)) in the morning. They go to school after lunch, at one o’clock. They have math at 1:15. David likes math because it’s interesting. Greg doesn’t like math. David and Greg have PE after math. They like the teacher, Mr. Wright, and they like PE because it’s fun. But Greg’s favorite subject is Spanish(西班牙語) and David’s favorite is music. He plays the piano( 鋼琴) and the violin(小提琴).

【1】David and Greg go to school ______.

A. in the morning B. in the afternoon C. in the evening

【2】______ like (or likes) math.

A. David B. Greg C. David and Greg

【3】What time do they have math?

A. After science B. At 1:15. C. At 1:50.

【4】Which of the following(下列哪個(gè))is NOT right(正確的 )？

A. David and Greg have PE after math.

B. David and Greg like PE.

C. Greg doesn’t like Spanish.

【5】______ plays the piano.

A. David B. Greg C. David and Greg

查看答案和解析>>

科目：初中地理 來源： 題型：

【題目】在實(shí)驗(yàn)室測(cè)定空氣中氧氣的含量實(shí)驗(yàn)，能否用硫代替紅磷？為什么？

________________________________________________________________________。

查看答案和解析>>

科目：初中地理 來源： 題型：

【題目】Sonia Hall喜歡運(yùn)動(dòng)，她不僅每天運(yùn)動(dòng)，而且常在電視上看比賽。她收集了5個(gè)籃球，3個(gè)排球，9個(gè)足球，6個(gè)網(wǎng)球拍，8個(gè)乒乓球和球拍。寫一段話，介紹一下Sonia Hall所收集的體育用品。

______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

___________________________________________________________________________________________

查看答案和解析>>

科目：初中地理 來源： 題型：

【題目】補(bǔ)全對(duì)話（5小題，每小題2分，共10分）

從方框中選擇適當(dāng)?shù)木渥友a(bǔ)全對(duì)話，有兩項(xiàng)多余。

Tony: How many people are there in your family?

Betty: 1 .

Tony: Have you got any grandparents?

Betty: 2 .

Tony: Where do they live?

Betty: 3 .

Tony: 4 .

Betty: Yes. My father has got a sister. And my mother has got a brother.

Tony: 5 .

Betty: Yes, I have got a dog at home. I like it very much.

查看答案和解析>>

科目：初中地理 來源： 題型：

【題目】—Kitty, how does your brother look like?

—__________.

A. His name is David. B. He is tall and slim

C. He is 13 D. He is a student.

查看答案和解析>>

科目：初中地理 來源： 題型：

【題目】下列物質(zhì)投入足量的稀鹽酸中，充分振蕩，能得到溶液的是( )。

A．木炭粉 B．銅粉

C．大理石粉 D．銀粉

查看答案和解析>>

科目：初中地理 來源： 題型：

【題目】—__________ do you watch TV?

—Almost every day.

A. How long B. How often

C. When D. Where

查看答案和解析>>

同步練習(xí)冊(cè)答案