高一寒假作業、英語,化學,生物
題目:
高一寒假作業、英語,化學,生物
單句改錯
1、We have discussed the problem for quite some time,but haven't been reachel any conclusion yet.
2、Tomisn't here.He has been to the library.
3.The couple had married for nearly 40 years before the husband died last year.
4.Rock music is popular by young people.
5.This is a good way of studay English well.
句型轉換
1.The reason why he took Swiss nationality in 1901 is still a questiong.
____ he took Swiss nationality in 1901 ____ ____ ____.
2.When and where for them to hold the meeting has not yet been decided.
____ ____ ____ ____ will hold the meeting has not yet been decided.
3.It is important that we should make full use of our time.
____ ____ ____ important _____ ____ ____ make full use of our time.
4.Dreams are different from reality.
Dreams ____ ____ reality.
5.He burst into rears on hearing the news.
He ____ ____ ____ on hearing the news.
有ABCDE五種化合物,其中ABCD是含鋁元素的化合物,F是一種氣體,標況下相對於空氣的密度是1.103.他們之間的轉化關係爲下
1.A+NaOH--D+H2O 2.B--A+H2O 3.C+NaOH--B+NaCl 4.E+H2O--NaOH+F
(1) 寫出ABCD的化學式
(2)寫出1.和4.的離子方程式
從一種生物的細胞中提取得到甲乙兩種有機物,甲的含量大於乙,在適當條件下用人的胃液處理,甲分解而乙不分解,分析甲乙的化學成分,甲含有氮和硫,乙含有氮和磷,甲乙兩種物質遇碘都不變藍,從來源看,在細胞膜上有甲而沒有乙.請回答
(1)根據以上敘述可知,甲屬於_________類物質,乙屬於__________類物質
(2)甲在適當條件下,用人的胃液處理後能分解,是胃液中的_______在起作用
(3)在物質乙的結構單位中,N主要存在於_________部分
解答:
沒問題!但是我不知道我的回答對你有多少的幫助!我儘量!
單句改錯:1 time改爲times 2 been改爲gone 3had被去掉 4 by改成with
5 study改爲studying
句型轉換:1 untill is a question 2 whenever and wherever they
3 it is very for me should 4 reject to 5 bushed into rears
化學:
1 A是 Al2O3 B 是Al(OH)3 C是 AlCl3 D是 NaAlO2 E是 Na2O2 F是 O2
2 Al2O3 + 2OH- = 2AlO2- + H2O 2Na2O2 + 2H2O = 2NaOH + H2O
生物:
1 甲是:蛋白質 乙是:核酸
2 酸
3 含氮鹼基
就這樣咯,我可是認真的做哦!
我有點想不通你們高一會買那麼難的,但是越難才對我有挑戰,我現在高二做這些沒問題!
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