题干

在酸性溶液中能大量共存,并且溶液为无色透明的是

A:Na+、K+、Cu2+、SO42

B:NH4+、Na+、NO3、Cl

C:K+、Ca2+、HCO3、Cl

D:Mg2+、I、Cl、NO3

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答案(点此获取答案解析)

B

同类题1

阅读理解

    ”I am so happy!" said Gorilla. "The Great King Ape is coming for dinner!"

    Chimp was happy too, and he jumped up and down.

    "I will cook a great meal for the Great King Ape!" said Gorilla.

    "I will cook too!" said Chimp.

    But Gorilla did not want Chimp t~ cook. He was sloppy. He often made a mess (搞的一团糟). He would ruin (破坏) her great meal. So she asked chimp to buy some drinks.

    When, Chimp came home, he asked, May I cook now?

    "We still need bananas," said Gorilla. "Please pick the best bananas you can find. I want to cook sliced (切片的) bananas for dessert (甜点)."

    Soon Chimp brought back a bag of bananas and put the bag on the kitchen chair. Gorilla walked into the kitchen. She did not see the bag and sat down on the chair. "Oh, no! My bananas! They are ruined!" Gorilla started to cry.

    "Don' t cry, Gorilla," said Chimp. "I have an idea for a nice dessert."

    Chimp took out a big bowl and a spoon (勺子). He peeled (剥皮) some bananas, put them in the big bowl and mashed (捣碎) them with the spoon. Then he put some milk in. At last, Chimp put it into a small bowl.

    Soon the Great King Ape arrived. He ate up all the food. "This is the best meal I have had!" he said.

    Chimp brought out the dessert. The Great King Ape tried it. "Delicious!" he said. "You are both great!"

    "Thank you," said Gorilla. She smiled at Chimp. "Chimp is a wonderful cook," she thought.

同类题3

阅读下面的文言文,完成后面题。

    张本,字致中,东阿人。永乐四年召为工部左侍郎。坐事免官,冠带办事。明年五月复官。寻以奏牍书衔误左为右,为给事中所劾。帝命改授本部右侍郎而宥其罪。七年,皇太子监国奏为刑部右侍郎善摘奸命督北河运躬自相视立程度舟行得无滞会疾作太子赐之狐裘冠钞遣医驰视。十九年,皇太子将北征,命本及王彰分往两直隶、山东、山西、河南,督有司造车挽运。明年即命本督北征饷。

    仁宗即位,拜南京兵部尚书兼掌都察院事。召见,言时政得失,且请严饬武备。帝嘉纳之,遂留兵部。

    宣德初,工部侍郎蔡信乞征军匠家口隶锦衣卫。本言:“军匠二万六千人,属二百四十五卫所,为匠者暂役其一丁。若尽取以来,家以三四丁计之,数近十万。军伍既缺,人情惊骇,不可。”帝善本言。

    征汉庶人,从调兵食。庶人就擒,命抚辑其众,而录其余党。还以军政久敝、奸人用贷脱籍,而援平民实伍,言于帝,择廷臣三出厘正之。时马大孳息,畿内军民为畜牧所困,本请分牧于山东、河南及大名诸府。山东、河南养马自此始。晋王济熿坐不轨夺爵,本奉圣旨散其护卫军于边镇。

    四年命兼太子宾客。户部以官田租减,度支不给.请减外官俸及生员军士月给。帝以军士艰,不听减。余下廷议,本等持不可,乃止。阳武侯薛禄城独石诸戍成,本往计守御之宜。还奏称旨,命兼掌户部。本虑边食不足,而诸边比岁稔,请出丝麻布帛输边易谷,多者三四十万石,少者亦十万石,储偫顿充。六年病卒,赐赙三万缗,葬祭甚厚。

    本廉介有执持,尚刻少恕。录高煦党,胁从者多不免。成祖宴近臣,银器各一案,因以赐之。独本案设陶器,谕日:“卿号‘穷张’,银器无所用。”本顿首谢,其为上知如此。(节选自《明史•列传•卷四十五•张本传》)

【注】①汉庶人:指因叛乱被贬为庶人的汉王朱高煦。②畿内:王都及其周围千里以内的地区。③熿:人名;④偫:积储;储备。