将国光苹果的芽嫁接到富士苹果树上,由国光芽长成的枝上结() A.国光 B.富士

题型:选择题

问题:

将国光苹果的芽嫁接到富士苹果树上,由国光芽长成的枝上结 (  )

A.国光

B.富士

C.一半是国光,一半是富士

D.不一定

考点:植物的有性生殖植物的无性生殖植物无性生殖的应用
题型:选择题

钓鱼岛是我国固有领土,决不允许别国侵占,近期,为提高警惕保卫祖国,我人民海军为此进行登陆演练,假设一艘战舰因吨位大,吃水太深,只能停锚在离海岸某处.登陆队员需要从较高的军舰甲板上,利用绳索下滑到登陆快艇上再行登陆接近目标,若绳索两端固定好后,与竖直方向的夹角θ=30°,队员甲先匀加速滑到某最大速度,再靠摩擦匀减速滑至快艇,速度刚好为零,在队员甲开始下滑时,队员乙在甲板上同时从同一地点开始向快艇以速度v0=3

3
m/s平抛救生圈,第一个刚落到快艇,接着抛第二个,结果第二个救生圈刚好与甲队员同时抵达快艇的同一位置,重力加速度g=10m/s2,问:

(1)军舰甲板到快艇的竖直高度H=?队员甲在绳索上运动的时间t0=?

(2)若加速过程与减速过程中的加速度大小相等,则队员甲在何处速度最大?最大速度多大?

(3)若登陆快艇一开始停在离海岸S=1km处(如图),登陆快艇额定功率5KW,载人后连同装备总质量103Kg,从静止开始以最大功率向登陆点加速靠近,到达岸边时刚好能达到最大速度10m/s,则登陆艇运动的时间t'=?

题型:选择题

母亲患艾滋病,为预防母婴传播,下列预防措施错误的是

A.尽可能终止妊娠

B.尽量采取 * * 正常分娩

C.产后避免母乳喂养

D.产前可口服AZT预防

E.要防止母婴之间血液的接触

题型:选择题

横亘新疆中部的山脉是(  )

A.秦岭

B.昆仑山

C.天山

D.太行山

题型:选择题

阅读下面两段文字,完成文后各题。(6分)

孟子曰:“于不可已而已者,无所不已。于所厚者薄,无所不薄也。其进锐者,其退速。”(《孟子·尽心上》)

子夏为莒父①宰,问政。子曰:“无欲速,无见小利。欲速则不达;见小利则大事不成。”  (《论语·子路》)

[注] ①莒父:鲁国邑名。

(1)下列对选文的理解,不正确的—一项是(3分)  (    )

A.孟子认为无论做什么事都应有个度,不应该停止的那就不能停止。

B.凡是前进太快的,那么后退起来也一定迅速,孟子反对那些锐意改革的人。

C.针对子夏的询问,孔子提出了“欲速则不达”的主张。

D.事实上,孔子与孟子的思想是一致的,他们都反过偏激而是主张恰到好处。 (2)上面两段文字都表达了什么观点?(请用自己的话表述)(3分)

题型:选择题

Children in any society are expected to learn to conform to a number of social rules and expectations if they are to become participants in the culture. (46)Among the rules that children in our society are expected to learn are that certain classes of adults (such as teachers and doctors) are addressed by titles, that males and females use separate restroom facilities, and that women but not men wear dresses. These are examples of social conventions. In the absence of such a shared norm, the acts are neither right nor wrong. For this reason, conventions may be said to be arbitrary. For example, (47)we could just as easily have students address teachers by first names as have them call teachers by their last names and formal titles of Mr. or Ms.
Conventions, however, serve an important function by providing predictability and order to social life. (48)Without social conventions it would be impossible to organize social institutions such as schools, and societies as organized systems could not exist. The arbitrariness of conventions makes their importance difficult for children to figure out. (49) It is not until some time in adolescence that children come to fully understand the function that these arbitrary conventions serve to provide predictability and order to our social interactions.
In contrast with issues of convention are matters of morality. Morality refers to issues of human welfare, justice, and rights that are a function of the inherent features of interpersonal relations. Because of this, the right and wrong of moral actions are not simply determined by social consensus or the views of authority. For example, it is not possible to hit another person with force and not hurt the other person. Similarly, it is not possible to steal something valuable from someone else and not cause the person to experience the sense of loss. A moral judgment about unprovoked harm ( "It is wrong to hit") would not be dependent on the existence of a socially agreed upon rule or standard but could be generated solely from the intrinsic effects of the act (i.e., hitting hurts). (50)Similar analyses could be done regarding a broader range of issues that would extend beyond direct harm to concerns for what it means to be just, compassionate, and considerate of the rights of others.

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