腹型紫癜患儿严禁（） A.卧床休息 B.限制活动 C.腹部热敷 D.腹部冷敷 E.限

1、What you think is proper in your own country may not be proper in another because of             c__________ difference.

2、They have decided to d___________ the evidence immediately they found there was no chance of breaking through.

3、An earthquake left the whole city in ________ (废墟)

4、On the exhibition , you can see many treasures found in an ancient s____________ ship

5、The electors d_____against the new rules and refused to sign their names on these documents.

6、We need to become a u____________ team to reach our long-term goals.

7、The strike left the railway system in c_______________

8、Are there any s_____________ between these two paintings?

9、The ___________(形成)of national character doesn’t take place in one day.

10、The elderly are usually ________( 担心的)　about the growth of the younger generation

11、The war cost an  _______________( 巨大的，庞大的)sum of money.

12、The ship is not in a  _______________( 状态，状况，条件)to make a long voyage.

13、The laborers prepared to resist and to ______________(推翻)this Government.

14、I’d like to see all the legal d_____ concerning the sale of this land before we sign this paper.

15、Literature and art have a great ________________(影响)　on people’s ideology.

16、Look, that poor girl has been trying hard to work out a ________(解决办法) to the question.

17、U________________，the poor boy lost his life in the big fire.

18、That building is a m________________ to those who were killed in the war.

19、He succeeded in business and was very w________________.

20、The Chinese ___________________  (文明) is one of the oldest in the world.

某自花传粉植物灰种皮(Y)对白种皮(y)为显性，紫茎(A)对绿茎(a)为显性，抗病(B)对感病(b)为显性，各由一对等位基因控制，并分别位于三对同源染色体上，且当花粉含AB基因时不能萌发长出花粉管。请回答：

(1)如果只考虑种皮颜色的遗传：将亲本植株(Yy)自交所结全部种子播种共得15株植株，其中有10株结灰色种子共300粒，有5株结白色种子共100粒，则子代的性状分离比与孟德尔定律预期分离比 __________(填相同或不相同)，最可能的原因是____________。

(2)如果只考虑茎的颜色和抗病性状的遗传：让基因型为AaBb的植株和aabb的植株相互受粉(正交和反交)

①．子代性状分离比是否相同？为什么？____________ ；

②．写出以aabb为母本，AaBb为父本杂交的遗传图解。

亲本：♀aabb×♂AaBb

配子：

子代表现型及比例：

(3)用基因型为AaBb的植株作材料，如何在较短时间内获得基因型为AABB的紫茎抗病植株？_________________________。

与生产作业计划相比，生产计划的特点有( )。

A．计划期短

B．计划期长

C．计划内容具体

D．计划单位小

按要求写出下列反应的化学方程式，并注明有关反应所属的基本类型（指化合反应、分解反应、置换反应、复分解反应）．

（1）不能用铁桶盛放硫酸铜溶液______

（2）实验室制取氢气______

（3）碳在高温下与二氧化碳反应______

（4）工业上煅烧石灰石制取生石灰______．

《战国策》在编纂体例上属于（）

A.国别史

B.纪传史

C.编年史

D.纪事本末史