下列实验方案中，不可行的是_刷题宝

题干

下列实验方案中，不可行的是（）

A：除去粗盐中的泥沙，采用溶解、过滤、蒸发的步骤

B：用MnO₂来区分水和过氧化氢溶液

C：用稀盐酸除去铁粉中混有的少量铜粉

D：用Ca（OH）₂溶液检验露置在空气中的NaOH溶液是否变质

上一题下一题 0.0难度选择题更新时间:2019-04-16 08:03:39

答案(点此获取答案解析）

C

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将一颗1克重的樟树种子种到土地里几年后长城100多千克的大樟树，樟树能够增重，主要来自于（　　）

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默写出下列空缺处的文字

①恰同学少年，风华正茂，____，____。（《沁园春·长沙》）

②高渐离击筑，荆轲和而歌，____，____。（《荆轲刺秦王》）

③____，不是清泉，是天上虹。（徐志摩《再别康桥》）

④真的猛士，敢于直面惨淡的人生，____。（鲁迅《记念刘和珍君》）

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Watching movies for your summer

Pirates of the Caribbean: Dead Man’s Chest 加勒比海盗：聚魂棺
Captain Jack Sparrow again appears on the screen. This time, he finds himself in a heavy debt(债) to Davy Jones. The only way to get out of it is to find the Dead Man’s Chest. He asks his old fiends for help and they start out to the sea.

Garfield: A Tale of Two Kitties 加菲猫: 双猫记
Hello, Garfield will meet you again on the screen. This time, America’s favourite cat Garfield travels to London. Garfield gets lost on the way. However, he enjoys his new life in his new home. But danger is near him…

Superman Returns 超人归来
How exciting it is to see Superman on the screen again! Like before, he is again saving the world. But his enemy, Lax Luther, is still planning to kill him so that he can control the world.

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— dog is this?—It's mine.

同类题5

He isn't g____ at football.

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