高一寒假作业、英语,化学,生物

单句改错

1、Wehavediscussedtheproblemforquitesometime,buthaven'tbeenreachelanyconclusionyet.

2、Tomisn'there.Hehasbeentothelibrary.

3.Thecouplehadmarriedfornearly40yearsbeforethehusbanddiedlastyear.

4.Rockmusicispopularbyyoungpeople.

5.ThisisagoodwayofstudayEnglishwell.

句型转换

1.ThereasonwhyhetookSwissnationalityin1901isstillaquestiong.

____hetookSwissnationalityin1901____________.

2.Whenandwhereforthemtoholdthemeetinghasnotyetbeendecided.

________________willholdthemeetinghasnotyetbeendecided.

3.Itisimportantthatweshouldmakefulluseofourtime.

____________important_____________makefulluseofourtime.

4.Dreamsaredifferentfromreality.

Dreams________reality.

5.Heburstintorearsonhearingthenews.

He____________onhearingthenews.

有ABCDE五种化合物,其中ABCD是含铝元素的化合物,F是一种气体,标况下相对于空气的密度是1.103.他们之间的转化关系为下

1.A+NaOH--D+H2O2.B--A+H2O3.C+NaOH--B+NaCl4.E+H2O--NaOH+F

(1)写出ABCD的化学式

（2）写出1.和4.的离子方程式

从一种生物的细胞中提取得到甲乙两种有机物,甲的含量大于乙,在适当条件下用人的胃液处理,甲分解而乙不分解,分析甲乙的化学成分,甲含有氮和硫,乙含有氮和磷,甲乙两种物质遇碘都不变蓝,从来源看,在细胞膜上有甲而没有乙.请回答

（1）根据以上叙述可知,甲属于_________类物质,乙属于__________类物质

（2）甲在适当条件下,用人的胃液处理后能分解,是胃液中的_______在起作用

（3）在物质乙的结构单位中,N主要存在于_________部分