正确答案: B
硝酸铵
题目:在盛有水的烧杯中加入以下某种物质,形成溶液过程中,温度下降。这种物质可能是( )
解析:B
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举一反三的答案和解析:
[单选题]下列各句中没有语病的一句是(2分) ( )
二连的恐龙化石、锡盟的辽阔草原、包头的南海湿地、阿拉善的沙漠奇石,成为各自地区颇具特色的旅游资源。
[单选题]下列词语中,加点字的读音全部正确的一组是
忐忑(tè) 截然不同(jié) 荤菜(hūn) 呱呱坠地(gūa)
[单选题]30.
rivers
解析:30.c【解析】“游泳”应在“河流、湖泊”中,A、B两项排除,人们也不常去“海洋”中游泳。
[单选题]决策过程中是在( )阶段基于决策目标和条件,分析制定可能采取的若干行动方案。
方案设计
[单选题]______________
How much is it?
[单选题]30. Why can fish swim in the water? Jack's answer is ________ .
fish can't walk on land
解析:30.A【解析】由最后一段最后一句可知。
[单选题]I'mnotsureaboutthemeaningoftheword.You'dbetterlookitupina____.
dictionary
[单选题]One day,a teacher was speaking to a group of students about how to (31) their time.He gave an example those students would never forget.He pulled out a wide jar(罐子) and put it on the table. He also took out several rocks and carefully put them into the jar one at a time. When no more rocks would( 32) inside,he asked,"Is this jar full?"
arrange
解析:31.D【解析】由题意“一天,一位老师给一组学生讲怎样安排他们的时间”知选D。
[单选题]下列下面对选文的分析不正确的一项是
选文第一自然段写唐雎坚决抵制秦王的骗局,断然拒绝“易地”,这是双方斗争的最高潮部分。