“前有悬崖，后有追兵”产生的动机冲突属于 A．双趋冲突 B．双避冲突 C．趋避冲突

关于代谢酶促动态法测定的叙述哪个是正确的（）

A.一般不需设置样品空白

B.为保证测定线性，所用酶的Km应尽量小

C.产物的堆积对反应的影响较大

D.不需设防止底物耗竭的参数

E.孵育温度波动，测定结果不受影响

市公安机关在侦查张某的抢劫案时，发现张某还涉嫌参与拐卖人口，需要另行计算侦查羁押期限，为此，该市公安机关应该遵循什么程序( )

A．由公安机关决定，报同级人民检察院批准

B．由公安机关决定，报上级人民检察院批准

C．由公安机关决定，报同级人民检察院备案

D．由公安机关决定，报上级人民检察院备案

如图，跳水运动员在入水过程中，身体所受的浮力______（选填“增大”、“减小”或“不变”），受到水的压强______（选填“增大”、“减小”或“不变”）．

篇章结构。

     __1__ He had more money than he could ever spend,and he was admired and looked up to by his

community.__2__ He wasn't happy.All his life he had been pursuing happiness and striving(奋斗)for

happiness,but he had never been able to find it.

     Then one day he heard about a hidden temple in Nepal that had a special room that contained the

secret of happiness.__3__ After many years of searching and countless hardships he arrived there.He was tired and penniless,but he knew that none of that mattered now because he had found the temple.He asked a wise,smiling monk(和尚)if he could enter the special room.The monk agreed and showed him the stairs

leading to the room.__4__ He stared into the room with sunlight streaming through the window and saw

what he had come so far to find.There hanging on the wall was the secret of happiness.The man gazed at

his reflection in the mirror and laughed.

     __5__ Happiness is a choice that we can make.Don't spend the rest of your life searching the world for happiness then.Just look in the mirror and laugh.Just let the happiness flow from your heart,mind,and soul

until it fills your life and the lives of all those around you.

A．He immediately sold all that he owned and set out to find this hidden temple.

B．The man found the secret of happiness at last.

C．But he knew that something was missing in his life.

D．He climbed them with legs shaking with expectation and slowly opened the door.

E．There once was a very wealthy and successful man.

F．It is time that we all realized that we were the secret of our own happiness.

G．It was difficult to find the temple in Nepal.

下列叙述中错误的是( )。

A．硬件是指中央处理机、存储器和输入输出等物理设备

B．操作系统的作用主要是管理系统中的各种资源

C．操作系统主要是考虑管理系统的功能，因此为用户提供良好的界面主要是由应用软件来完成

D．操作系统是与计算机硬件关系最为密切的系统软件