关于老年性 * * 炎病因的描述，下列说法不正确的是（） A.雌激素水平下降 B. * *

心室除极首先从（）。

A.左室开始

B.右室开始

C.室间隔中部开始

D.室间隔上部开始

E.基底部开始

给下列对联归类，把相应的序号填在括号里。

①东风吹出千山绿，春雨洒来万象新（ ）

②死者长已矣，死而能伸民志伸国权，死犹不死！生而为何乎？生而成为奴隶为牛马，生亦徒生！（     ）

③远求海外珍藏本，快读人间未见书（ ）

④海枯石烂同心永结，地阔天高比翼齐飞（ ）

A．春联          B．婚联         C．挽联         D．行业联

舌色淡白光莹，多属（）

A．热灼津伤

B．气血两虚

C．两者均有

D．两者均无

Americans have four primary avenues for making friends: at work, at school, through a hobby or a (1) such as volunteer work and discussion group, or through a family or (2) .
In American culture, a job is more than the work that one performs between the hours of 9 a.m. and (3) . Work becomes a major socializing influence. Many young mothers who (4) their jobs to care for small children remark on the loneliness of their new lifestyles because they have lost their forum for (5) .
A great number of American employers recognize business social (6) and use it to build a family atmosphere on the job so that employees will feel (7) in their work environment. Some employers arrange company get-togethers in their home or at a (8) . American companies have at least one (9) annually, usually at Christmas time. Many corporations have (10) where employees and administrators alike dress (11) to play games such as baseball and volleyball.
Top American administrators often hold social gatherings (12) . Depending upon the size of the employer’s home and the number of (13) . These social gatherings may be picnics, pool parties, or (14) . If the company is large, an employer may hold what Americans call (15) . For an open house, the employer will invite his employees to come to his home (16) between 1 p.m. on a certain day. Those invited usually stay for (17) , chatting with the other guests and their host. People come and go (18) during the designated hours, and the host keeps refreshments, usually (19) or hors d’oeuvres and beverages, available for all who come. For such social gatherings, it is considered (20) the invitation unless you have an excellent reason.

简答散客旅游的定义及近年来迅速发展的原因。（5分）