试述物流信息系统的发展阶段及各个阶段的主要特点。

惊悸怔忡属饮邪上犯者，其最佳治疗方剂是

A．二陈汤
B．温胆汤
C．苓桂术甘汤
D．真武汤
E．《济生》肾气丸

互联网招募是一种新型的网上职业中介机构，目前我国互联网招聘中存在一些不足之处，主要体现在（）。

A.信息可信度不高

B.保密性不好

C.信息更新缓慢、网站相互复制

D.双方缺乏感性认识

“亡羊补牢，为时未晚”反映了哪一种控制类型的效果？（）

A.现场控制

B.中期控制

C.前馈控制

D.反馈控制

Optimism is the art of always seeing the glass half full (1) half empty, finding something positive in even the most (2) of situations and last but not least the ability to expect the best even if the chances are (3) . It enables you to try new things, deal with failure as a learning experience (4) a stopping point. In general optimism gives you a reason to live. The world would be a better place if it was full of optimism, (5) unfortunately the trend in today’s youth is (6) the opposite way. Today it is (7) to be pessimistic. One could spend hours discussing how we arrived at this point, (8) our youth refuses to smell the roses and instead prefers to (9) themselves on their own pessimistic (10) .

Optimism is not an (11) gift but rather a learned behavior (12) . Like most behaviors optimism is best learned by watching examples, (13) you. The first step in creating a generation of people with a positive outlook on life, is to (14) life on the bright side yourself. (15) it would be wrong to (16) your child from all negativity, it is important that you are not the (17) of doubts and worries. Finding something positive in a negative situation needs to be (18) Show how to make the best of things by always (19) the positive, by encouraging your child after a(n) (20) and by explaining over and over that failure is just a part of progress.

4（）

A.via

B.versus

C.over

D.beyond