“钟摆族”是指工作在城市中，生活在郊区或其他城市，两处奔波的职场人士；“潮汐车道

水平放置的U形光滑金属导轨上放置一金属棒ab，甲图中的矩形区域内存在一有界匀强磁场，规定垂直纸面向里为磁场正方向。现使该磁场按乙图所示的规律变化，则下列判断正确的是

A．ab棒中将产生从a到b方向的电流，同时ab棒将在导轨上向右滑动

B．ab棒中将产生从b到a方向的电流，同时ab棒将在导轨上向左滑动

C．ab棒中将产生先从a到b方向后从b到a方向的电流，ab棒将在导轨上先向右后向左滑动

D．ab棒中将产生从a到b方向的电流，ab棒不会在导轨上滑动

第三部分阅读理解（共20小题；每小题2分，满分40分）

Housing is always an important comcern,and things were no different back in Canada`s early days.The nailve population had several answers to the housing problem．

The igloo if a house built of ice or snow and is still in use today in more primitive areas of  Canada`s north．The Inuit people find them the best type of housing,eSpecially when away from home on hunting or fishing trips.The igloos used o such trips are smaller and only temporary homes to be used for a few nights at most．Igloos are domeshaped（圆顶形的）and made of blocks of ice or snow.First a hole is dug out in the snow and this forms the lower part of the igloo.Then the blocks of ice or snow are built in a slope inwards and upwards from this base.Often a short tunnel leads to the door.This prevents the cold winds and snow blowing into the structure.

Tipis（or tepees）are the conical（圆锥形的）tents used by the majority of native People

across America.Some Canadian aboriginal people still prefer them to other types of housing. These structures are formed by a frame of poles covered with，usually，iether buffalo hide（水牛皮）or birch bark（桦树皮）．A hole at the top lets out the smoke from the cooking fires．Native people mostly travel from place to place,following their food supple across the countryside.Tepees are easy to taKe down，carry and put up at the next stopping place．

Another type of house iS the long house.This is exactly what the name suggests-a long narrow building that could house ten to twenty families.Built of poles covered with hides,there houses are common to the Iroquois people of 0ntario and NeW York.These structures are also on the West Coast by the Squeamish Indians.They are usually occupied by an exended family and divided into individual rooms,each with its own cooking fire.They are decorated with totem emblems （图腾标志）and a totem pole by the front door tells the history of the family．

56.Which of the following pictures matches with the igloo?

57．The short tunnel leading to the door of an igloo is used to__________．

A.catch the animals              B.decorate the igloo

C.fasten the igloo         D.keep the gloo warm

58．Which of the following about a tiPi is NOT true？

A.It has a hole at the top.

B.It is made of poles covered with hides．

C.lt can be easily carried everywhere.

D.It has a firm base made of ice.

59. The underhned word "They" in the last paragraph refers to "________"．

A.Squeamish Indians     B.Long houses

C.Families              D.Individual rooms

6o. Where can we most probably read this passage?

A.In a medical journal. B.In a science report．

C.In a culture magazine．D.In a biology textbook．

职位是以（）为中心确定的

A.人

B.事

C.责

D.权

小王是某软件开发公司负责某项目的项目经理，该项目已经完成了前期的工作进入实施阶段，但用户提出要增加一项新的功能，小王应该（）

A.立即实现该变更

B.拒绝该变更

C.通过变更控制过程管理该变更

D.要求客户与公司领导协商

Informal conversation is an important part of any business relationship. Before you start a discussion, however, make sure you understand which topics are suitable and which are considered taboos in a particular culture. Latin Americans enjoy sharing information about their local history, art, and customs. They expect questions about their family and are sure to show pictures of their children. Yon may feel free to ask similar questions of your Latin American friends. The French think of conversation as an art form, and they enjoy the value of lively discussions as well as disagreements. For them, arguments can be interesting—and they can cover pretty much or any topic—as long as they occur in a respectful and intelligent manner.

In the United States, business people like to discuss a wide range of topics, including opinions about work, family, hobbies, and politics. In Japan, China, and Korea, however, people are much more private. They do not share much about their thoughts, feelings, or emotions because they feel that doing so might take away from the harmonious business relationship they’re trying to build. Middle Easterners are also private about their personal lives and family matters. It is considered rude, for example, to ask a businessman from Saudi Arabia about his wife or children.

As general rule, it’s best not to talk about politics or religion with your business friends. This can get you into trouble, even in the United States, where people hold different views. In addition, discussing one’s salary is usually considered unsuitable. Sports is typically a friendly subject in most parts of the world, although be careful not to criticize a national sport. Instead, be friendly and praise your host’s team.

Which is typically a friendly topic in most places according to the author（）

A. Sports.

B. Children.

C. Personal feelings.

D. Families.