【題目】國家科技惠民計(jì)劃項(xiàng)目“石漠化治理及其生態(tài)產(chǎn)業(yè)科技惠民示范工程”于2014年1月6日在貴州普定縣啟動。此次啟動的畫家科技計(jì)劃項(xiàng)目示范工程，由中科院地化所牽頭實(shí)施，選取滇桂黔石漠化集中連片貧困地區(qū)的典型代表——貴州普定縣為示范區(qū)，針對喀斯特山區(qū)石漠化嚴(yán)重、工程性缺水、土地生產(chǎn)能力低下的主要瓶頸問題，展開技術(shù)攻關(guān)研究和集成應(yīng)用示范。據(jù)此回答下列問題。

（1）你認(rèn)為造成“石漠化”的主要原因是什么？

（2）防止石漠化的主要方法有哪些？

【答案】（1）貴州境內(nèi)石灰?guī)r分布廣泛，大部分地區(qū)土層較薄，由于不合理的墾殖活動，破壞了原有植被，造成嚴(yán)重的沙土流失，導(dǎo)致基巖大面積裸露而出現(xiàn)石漠化現(xiàn)象。

（2）生態(tài)恢復(fù)措施：封山育林、人工種草、草地改良、坡耕地改梯田

生態(tài)工程：實(shí)施石漠化綜合治理、水土保持等生態(tài)工程，以促進(jìn)區(qū)域生態(tài)建設(shè)，鞏固長江、珠江上游的生態(tài)屏障。

【解析】

據(jù)原文中：“石漠化”是指巖石表面的土層長年累月被雨水沖刷，土壤越來越薄，底部的巖石紛紛突出地表而形成名符其實(shí)的石山，致使當(dāng)?shù)馗孛娣e逐漸減少進(jìn)行分析判斷即可。

據(jù)題目中的：“石漠化”是指巖石表面的土層長年累月被雨水沖刷，土壤越來越薄，底部的巖石紛紛突出地表而形成名符其實(shí)的石山，致使當(dāng)?shù)馗孛娣e逐漸減少可知，造成石漠化的原因是：植被受破壞，造成水土流失；防止石漠化可以有生態(tài)恢復(fù)措施及生態(tài)工程措施，生態(tài)恢復(fù)措施：封山育林、人工種草、草地改良、坡耕地改梯田；生態(tài)工程：實(shí)施石漠化綜合治理、水土保持等生態(tài)工程，以促進(jìn)區(qū)域生態(tài)建設(shè)，鞏固長江、珠江上游的生態(tài)屏障。

練習(xí)冊系列答案
相關(guān)習(xí)題

科目：初中地理 來源： 題型：

【題目】亞洲是世界第一大洲，下列關(guān)于亞洲的“世界之最”敘述正確的是（　 　）

A.平原﹣西西伯利亞平原B.高原﹣青藏高原是世界上最高的大高原

C.湖泊﹣里海是世界最大的淡水湖D.半島﹣世界上最大的半島是印度半島

查看答案和解析>>

科目：初中地理 來源： 題型：

【題目】閱讀下列短文，根據(jù)短文中的信息完成文后表格。（每空一詞）

It’s hard to make friends if you stay at home alone all the time. Get out of the house and do things that will put you in touch with other people. It’s easier to make friends when you have the same interests.

Don’t be afraid to show people what you are really good at. Talk about the things you like and do best. People will be interested in you if there is something interesting about you.

Look at people in the eyes when you talk to them. That way, they will find it easier to talk to you. If don’t, people may think you are not interested in them and may stop being interested in you.

Be a good listener. Let people talk about themselves before talking about ‘me, me, me’. Ask lots of questions. Show interest in their answers.

Try to make friends with the kind of people you really like — not just with those who are easy to meet. Be friendly with a lot of people. If so, you will have a bigger group of people to choose(選擇) from and have more chances(機(jī)會) to make friends.

【1】to make friends

Idea

Suggestions(建議)

Results

Go【2】and keep in touch with other people.

·Don’t be afraid of【3】yourself.

People will be【4】in what you like and do best.

·Look at people in the【5】.

It will be easier to【6】with others.

·Be a good【7】.

Let people talk about themselves before talking about【8】.

·Be【9】to many people.

You will have【10】people to choose from as your friends.

查看答案和解析>>

科目：初中地理 來源： 題型：

【題目】根據(jù)短文內(nèi)容，從方框中選擇恰當(dāng)?shù)脑~語填空，有的需要變換形式。

control, important, die, situation, trouble, get out of, accident, nurse, risk, call

control, important, die, situation, trouble, get out of, accident, nurse, risk, call

It was a rainy day. Mr. Green, a doctor at Green Hospital, got a call for an important operation (手術(shù)). He knew the 【1】 of saving a life. He hurried (匆忙) to the hospital.

Seeing him, the father cried out, “Don’t you know my son is at the 【2】 of losing his life? Why didn’t you come here quickly?”

Mr. Green said,“I am sorry. Please could you 【3】 your emotions (情緒) so that I can do my work well.”

“What? What if your son was in【4】? My son is facing (5)【5】 while (而) you are keeping him waiting. Why don’t you do something?”said the father angrily. Mr. Green smiled,“I’ll do my best.”

Two hours later Mr. Green【6】 the operating room. He said, “Your son is OK!” And without waiting for the father’s reply, he left, saying, “If you have any question, ask the (7)【7】.”

“Why couldn’t he wait? I have some questions about my son’s 【8】.”shouted the father. The nurse answered,“His son died yesterday in a road【9】. He was at the funeral (葬禮) when we【10】 him to operate on your son.”

查看答案和解析>>

科目：初中地理 來源： 題型：

【題目】 My name is Lily. I live in the USA. My father is a teacher, and he teaches math in the school. He takes the subway to work at eight every morning. My mother is a doctor. She works in Center Hospital. She goes to work by bus. I study in a school near our home. In the morning, I do some exercise. Then I go to school on foot. I usually watch TV in the evening. My mother does some washing. Every Sunday, we often go to the zoo. I like my family very much.

【1】Where does Lily live?

A.In the school.B.In the USA.C.In the UK.D.In the shop.

【2】Lily's mother is ________.

A.a doctorB.a teacherC.a studentD.a diver

【3】Does Lily’s mother go to work by bus?

A.Yes, she does.B.No. she doesn't.

C.Yes, she is.D.No. she isn’t.

【4】How does Lily go to school?

A.By bike.B.By bus.C.On foot.D.By car.

【5】What does Lily usually do in the evening?

A.She usually does the exercise.B.She usually does some washing.

C.She usually watches TV.D.She usually has classes.

查看答案和解析>>

科目：初中地理 來源： 題型：

【題目】根據(jù)漢語意思及括號內(nèi)所給英文提示語，將下列句子翻譯成英語。

【1】我奶奶習(xí)慣住在鄉(xiāng)下。(be used to)

________________________________________

【2】我調(diào)高了收音機(jī)的音量以便大家都能聽到音樂。(so that)

________________________________________

【3】這本書告訴我們家庭教育的重要性。(importance)

________________________________________

【4】她不想今天就離開這里。(be ready to)

________________________________________

【5】本學(xué)期Mr. Wang管理我們班。(be in control of)

________________________________________

查看答案和解析>>

科目：初中地理 來源： 題型：

【題目】某日，小明在互聯(lián)網(wǎng)上看到世界各地好友當(dāng)天發(fā)來的信息：

甲：又是黑夜漫長的季節(jié)，向北望去，小城上空的極光如彩色惟幕般掛在夜空。

乙：溫暖的海風(fēng)夾著即將到來的夏天的味道撲面而來。

據(jù)此完成下題。乙地區(qū)此時(shí)處于（　�。�

A.春末B.初冬C.深秋D.盛夏

查看答案和解析>>

科目：初中地理 來源： 題型：

【題目】How do you study each day? You may answer it in one second: have classes at school, take notes and do homework. Feeling a little bored? There are other ways that can make learning interesting and varied. It’s called digital learning.

Digital learning is a way to help students learn by using the Internet. There are three important kinds of digital learning. Apps are computer software applications (應(yīng)用). People can download them on their mobiles. The other two kinds are social networking services, including weibo and WeChat and websites. Every one of them is like your teacher. They help you master what you learn at school.

Compared with traditional learning ways, digital learning has its advantages. Digital learning is also varied. It covers almost every school subject. More importantly, it always offers students the newest resources (資源) to learn from.

Digital learning is also personalized. You can choose what you like to learn. If you don’t master what you have learned at school, you can learn again through digital ways.

However, digital learning also has disadvantages. When you use digital ways to learn, you’ve got little chance of talking with teachers and classmates. As digital learning uses computers or smartphones, watching the screen too long may be bad for your eyes. It is better to take a rest every 20 minutes.

【1】How do students usually study everyday according to the story?

A. Have classes at school and use online tools at home.

B. Have classes at school, take notes and do homework.

C. Learn through digital ways and have classes in the classroom.

D. Have classes, take notes and do homework at school.

【2】Three important kinds of digital learning are mentioned in the passage. They are _______.

a. Apps. b. smartphones c. computers d. websites

e. mobiles f. weibo and WeChat

A. a b f B. a d f C. b c e D. c d e

【3】The underlined word “master” in Paragraph 2 most probably means “_________”.

A. 復(fù)習(xí) B. 分析 C. 掌握 D. 歸納

【4】What is the problem of digital learning?

A. You can’t communicate with your classmates or teachers.

B. You have to use both computers and smartphones.

C. You can’t decide what you want to learn by yourself.

D. It’s impossible to learn from the newest resources.

【5】How can you protect your eyes when learning in digital ways?

A. Try to take a rest for 20 minutes when watching the screen.

B. Try to use traditional ways to learn as often as possible.

C. Try to take a break every twenty minutes if possible.

D. Try to learn through digital ways less than 2 hours a day.

查看答案和解析>>

科目：初中地理 來源： 題型：

【題目】根據(jù)下面的對話情景，在每個(gè)空白處填上一個(gè)適當(dāng)?shù)木渥�，使對話的意思連貫、完整。

W: Hi, Bob!

M: Hi, Nancy! 【1】 ?

W:It was great.

M: 【2】 ?

W: I went to Xi’an.

M: 【3】 ?

W: I took a bus there. And what did you do?

M: 【4】 .

W: Why did you clean your house?

M: I had a birthday party. So my house was very dirty.

W: 【5】 ?

M: Yes, I had a good time. But I was tired after the party.

查看答案和解析>>

同步練習(xí)冊答案