【題目】下列關(guān)于碳酸(H2CO3)和硅酸(H2SiO3)的說(shuō)法中不正確的是( )

A.兩者均為弱酸

B.兩者均可使紫色石蕊試液變紅色

C.CO2氣體通入Na2SiO3溶液中可以制得硅酸

D.兩者受熱時(shí)均可以分解

【答案】B

【解析】硅酸不能夠使紫色石蕊試液變紅,B錯(cuò)誤。

練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目:高中地理 來(lái)源: 題型:

【題目】If the food tastes nice,we’ll buy some;if ________,________.

A.no;no B.not;not

C.not;no D.no;not

查看答案和解析>>

科目:高中地理 來(lái)源: 題型:

【題目】—Who should be responsible for the accident?

—The boss,not the workers.They just carried out the order ________.

A.a(chǎn)s told B.a(chǎn)s are told C.a(chǎn)s telling D.a(chǎn)s they told

查看答案和解析>>

科目:高中地理 來(lái)源: 題型:

【題目】人在一篇游記中寫道:“登高南望,俯視太行諸山,晴嵐可愛(ài).北顧但寒沙衰草……”據(jù)此,讀下圖回答下列各題。

【1】游記作者,所登臨之處的位置最接近圖中的

A.地點(diǎn)① B.地點(diǎn)②

C.地點(diǎn)③ D.地點(diǎn)④

【2】圖中所示的②地,1月的平均氣溫和年降水量應(yīng)最接近

A-8℃,200mm B.-5℃,400mn

C2℃,600mn D.5℃,800mn

查看答案和解析>>

科目:高中地理 來(lái)源: 題型:

【題目】

It was not until I came here I realized this place was famous for not only its beauty but also its weather. (2012 .安徽)

A.who

B. that

C. where

D. before

查看答案和解析>>

科目:高中地理 來(lái)源: 題型:

【題目】閱讀我國(guó)江蘇、安徽等地區(qū)圖文資料后,回答問(wèn)題。

資料一 鹽城擁有江蘇省最長(zhǎng)的海岸線、最大的沿海灘涂、最廣的海域面積,同時(shí)也是丹頂鶴的家園、麋鹿的故鄉(xiāng),在沿海灘涂上建有麋鹿和丹頂鶴兩個(gè)國(guó)家級(jí)自然保護(hù)區(qū),被譽(yù)為“東方濕地之都,仙鶴神鹿世界”。

資料二 “皖電東送”工程每年可從安徽淮南(我國(guó)重要能源基地)向上海輸電500億度。

資料三 南通在經(jīng)濟(jì)發(fā)展過(guò)程中,承接了上海轉(zhuǎn)移而來(lái)的部分紡織工業(yè)和鋼鐵工業(yè)。

(1)分析鹽城濕地廣布的原因。

(2)說(shuō)明實(shí)施皖電東送工程對(duì)上海市地理環(huán)境的影響。

(3)概述南通承接上海產(chǎn)業(yè)轉(zhuǎn)移的區(qū)位優(yōu)勢(shì)。

查看答案和解析>>

科目:高中地理 來(lái)源: 題型:

【題目】讀圖,回答下列各題。

【1】圖中河流特征及其成因?qū)?yīng)正確的是

A.渭河南岸無(wú)大支流——地轉(zhuǎn)偏向力影響

B.涇河自西北流向東南——地勢(shì)西北高東南低

C.洛河含沙量小——流經(jīng)地區(qū)植被覆蓋率高

D.河流以冰雪融水補(bǔ)給為主——發(fā)源于高原

【2】圖中涇河流域可持續(xù)發(fā)展的重點(diǎn)是

A.加固大堤,治理“地上河”

B.修建水庫(kù),梯級(jí)開發(fā)

C.引水灌溉,發(fā)展農(nóng)業(yè)

D.合理采礦,保持水土

查看答案和解析>>

科目:高中地理 來(lái)源: 題型:

【題目】--- Ive read another book this week

--- Well, maybe is not how much you read but what you read that counts. (2009 .浙江)

A. this

B. that

C.there

D. it

查看答案和解析>>

科目:高中地理 來(lái)源: 題型:

【題目】下面短文中有10處語(yǔ)言錯(cuò)誤。請(qǐng)?jiān)谟绣e(cuò)誤的地方增加、刪減或修改某個(gè)單詞。

增加:在缺詞處加一個(gè)漏字符號(hào)(),并在其下面寫上該加的詞。

刪除:把多余的詞用斜線(/)劃掉。

修改:在錯(cuò)的詞下劃一橫線,并在該詞下面寫上修改后的詞。

注意:1. 每處錯(cuò)誤及其修改均僅限一詞;

2. 只允許修改10處,多者(從第11處起)不計(jì)分。

例如:

It was very nice to get your invitation to spentweekend with you. Luckily

the

I was completely free then, so I’ll to say “yes”. I’ll arrive in Bristol at around 8:00 p.m.

am

in Friday evening.

On

When I was a very young children, my father created a regular practice I remember well years late. Every time he arrived home at end of the day, we’d greet her at the door. He would ask who we was and pretend not to knowing us, Then he and my mother would have had a drink while she prepared dinner and they would talk about his day and hers. While they chat, my father would lift my sister and me up to sit in the top of the fridge. It was both excited and frightening to be up there!

My sister and I thought he was so cool for putting us there.

查看答案和解析>>

同步練習(xí)冊(cè)答案