以下的for循环 for(x＝0，y=0，(y! =123)&&(x＜4);x++

眼眶横纹肌肉瘤USG检查，可见（）。

A.圆形、椭圆形或不规则的实质性状回声

B.因有假包膜故边界较清晰

C.内部呈均匀的弱回声影

D.内部呈不均匀的强回声影

E.视神经及球壁侵犯、破坏改变

探究凸透镜成像规律的实验中:

（1）小红先将凸透镜正对着太阳光，调整凸透镜和白纸间的距离，直到太阳光在白纸上会聚成一个最小最亮的点，如图甲所示，这一操作的目的是     。

（2）实验中，当蜡烛、凸透镜和光屏位于如图乙所示的位置时，小红看到在光屏上成了一个烛焰清晰   。（选填“放大”、“等大”或“缩小”）的像，这种成像规律在实际中的应用有   （写出一种即可）。要使烛焰在光屏上所成的变小，蜡烛的位置不动，透镜应      （选填“靠近”或“远离”）蜡烛，同时节光屏位置。

(四)

[背景资料]

某工程位于某市中立交桥与体育场路口交叉处，总建筑面积4万多平方米，其中一号楼、二号楼和三号楼均为高层建筑。该屋面上有各种管道和屋顶花园设施等，针对该工程的使用功能和对防水、隔热要求高、难度大的特点，建设单位设计部门对防水保温隔热方案的设计和施工十分重视，经过实地考察并分析具体情况，通过精心施工，克服了各种困难，于1998年12月22日一起与其他项目验收为省优良工程，得到各方面的好评。

请简述上一问中所提到的制度的主要任务。

账户开立必须做到（）三分离

A、受理、审核、操作

B、印、押、证

C、受理、主办、审核

D、经办、受理、审核

Personality is to a large extent inherent. A-type parents usually (1) A-type offspring. But the environment must also have a profound effect (2) if competition is important to the parents, it is (3) to become a major factor in the lives of their children.

One place where children (4) A characteristics is school, which is, (5) its very nature, a highly competitive institution. Too many schools (6) the "win at all costs" moral standard and measure their success by sporting achievements. The current (7) for making children compete against their classmates or against the (8) produces a two-layer system, in which competitive A types seem in some way better than their B type fellows. Being too (9) to win can have dangerous consequences: remember that Pheidippides, the first marathon runner, (10) dead seconds after saying. "Rejoice, we conquer!"

(11) the worst form of competition in schools is the disproportionate emphasis on examinations. There is, for example, a (12) school that allows pupils to concentrate on those things they do well. The (13) of competition by examination are somewhat questionable, but competition in the certain (14) of failure is positively harmful.

(15) , it is neither practical nor desirable that all A youngsters change into B’s. The world needs types, and schools have an important duty to try to (16) a child’s personality to his possible future employment. It is top management.

If the preoccupation of schools with academic work was (17) , more time might be spent teaching children surer values. Perhaps selection (18) the caring professions, especially medicine, could be made less by good grades in chemistry and more by such (19) as sensitivity and sympathy. It is surely a mistake to choose our doctors exclusively from A type stock. B’s are important and should be (20) .

12（）

A.responsible

B.reliable

C.scarce

D.rare