据统计，全球每小时约有510 000 000吨污水排入江河湖海，用科学记数法表示

不伴有结缔组织外痔、皮下瘘等的陈旧性肛裂的最佳治疗方法是：

A．切开疗法

B．肛裂侧切术

C．苦参汤坐浴

D．内服润肠汤

E．生肌散外敷

下列不属于自主神经特点的是（）

A.自主神经是指内脏运动神经，又称植物性神经

B.一般不受意识支配

C.自低级中枢发出至所支配的器官要换一次神经元

D.低级中枢均位于脊髓内

E.有交感和副交感两种纤维成分

交警：指挥交通：安全

A．太阳：照射地面：温暖

B．酒吧：娱乐休闲：喝酒

C．乞丐：流浪乞讨：同情

D．飞机：飞行运输：战争

阅读理解。

    You're sitting on the train home and the person opposite you yawns (打哈欠). Suddenly, you're yawning

with him, though you're not tired.

     This phenomenon confused scientists for years until a recent study found that people tend to sympathize

with fellow humans. Supporting this claim was the discovery that those children who were unable to form

normal emotional ties with others did not experience contagions (有感染力的) yawning, which showed that

humans communicate regularly without words.

     Hogo Critchley, a neuroscientist, has conducted an experiment recently, which will prove that happiness

and sadness can spread like the common cold. According to Critchley, our mind and body are in constant

exchange about how we're feeling. "Emotions are closely linked with states of internal (内部的) responses,"

he explained. "There are also more visible changes in our gesture and facial expressions. When we're in a

group, these signals can spread to another person. For example, there're the obvious tendency to smile when

smiled at and there are less obvious changes that reflect emotions of surprise, anger or sadness such as a

change in our heart rate and blood pressure."

     Hugo Critchley further explained, "Our bodies synchronise and when we like the other Person, we even

copy his behaviour. Next time you chat with a friend, take note of how you're sitting-it's pretty likely that

you will be the same. Scientists believe it's our way of telling each other that you're parents. Through body

language, humans give each other very subtle (微妙的) but clear signals that show emotions."

     So, what lessons can we learn from this? "spend time with happy people-otherwise your health could

suffer," said Critchley. "When we're sad, our body goes into fight or flight mode. But when we're happy, our

body works normally and we feel relaxed and positive. So we look bright, our skin glows, we feel healthy and

it affects everyone around us."

1. According to Hugo Critchley, _____. [ ]

A. emotions are as visible as facial expressions

B. we yawn more frequently when we have a cold

C. emotions are connected with states of internal responses

D. the change of blood pressure is not linked with the change of emotions

2. The underlined word "synchronise" in paragraph 4 means "_____".

A. move slowly

B. change rapidly

C. relax temporarily

D. respond accordingly

3. From the passage we can learn _____. [ ]

A. sadness is as contagious as happiness

B. anger is less contagious than friendliness

C. surprise is more contagious than smile

D. surprise is the most contagious among emotions

4. Which of the following statements is true according to the passage? [ ]

A. Emotions have delicate influence on fellow humans.

B. Children like copying the actions of the fellow humans.

C. Scientists are still confused about contagious yawning.

D. People tend to communicate more with body language.

你正在进行软件开发项目。在这个项目中，必须进行大量测试，其中一些需要进行多次。项目包含的一些活动的顺序取决于前期进行的活动的结果。例如，如果在检查中发现了一个错误，项目设计必须修改，由此需要进行额外的测试。你将采用什么样的计划方法？（）

A.PDM网络

B.PERT网络

C.GERT网络

D.XDM网络