曲线y=x3+x+1在点（1，3）处的切线方程是（ ）。

面向对象程序设计支持的3大特性为：封装性、继承性和 【3】 。

孝文帝改革的措施促进了                             。

(C)

After my husband died suddenly from a heart attack，my world crashed around me．My six children were all under 10，and I was burdened with the responsibilities of earning a living，and   caring for the children．I was fortunate to find a wonderful housekeeper to care for the children during the week，but from Friday nights to Monday mornings，the children and t were alone．

One Friday evening I came home from work to find a big pretty German shepherd off our doorstep．This dog seemed to intend to enter the house．The children liked “German” immediately and begged me to let him in．I agreed to let him sleep in the basement．That night I slept peacefully for the first time in many weeks．

The following morning we made phone calls and checked lost-and-found ads for German’s owner, but with no results．

On Sunday I had planned to take the children on a picnic．Since I thought it best to leave German behind in case his owner came by，we drove off without him．When we stopped to get gas, we were amazed to see German racing to the gas station after us．No way was he going to be left behind．

Monday morning I let him out for a run．He didn’t come back and we were all disappointed．

We were convinced that we would never see him again．We were wrong．The next Friday evening,

German was back on other doorstep．Again he stayed until Monday morning，when our housekeeper arrived．

This pattern repeated itself every．weekend for almost 10 months．We grew more and more fond of German．We took comfort in his strong，warm presence，and we felt safe with him near us．

As German became part of the family，he considered it his duty to check every bedroom to be sure each child was cozy in bed．

Each week，between German’s visits，I grew a little stronger，a little braver and mole able to cope；every weekend we were no long alone and enjoyed his company．Then one Monday morning we patted him on his head and let him out for what turned out to be the Iast time．We never saw German again．

64．The dog first came when         ．

A．it was needed most    B．the mother became strong enough

C．her father died suddenly         D．she was busy on the weekday

65．Which of the following can’t be used to describe the dog?

A．Loyal．    B．Beautiful．    C. Lovely．      D．Wild．

66．The wriier was very         the German shepherd．

A．afraid of    B．grateful to    C．cruel to        D．annoyed with

67．The family planned to go on a picnic without the German shepherd because         ．

A．German was too wild to control           B．German was too young to walk so far

C．the owner might come by to look for it       D．it might spoil the trip

场景(七) 甲监理公司接受乙建设单位委托承担一项工程项目的监理任务，王某是甲监理公司承担此任务的总监理工程师，监理过程中，王某发现工程设计不符合合同约定的质量要求，王某直接找设计单位，设计单位按照合同要求改正，王某看图已符合要求，并未将此事报告给建设单位。
根据场景(七)，回答下列问题：

设计文件不仅是施工的依据，也是( )的依据。

A．竣工决算

B．进度计划

C．招标

D．监理

自救器按照结构方式可以分为（）、（）。