组成为C3H5O2Cl的有机物甲,在NaOH溶液中加热后,经酸化可得组成为C3H

引起介水传染病的污染是（）

A.物理性污染

B.化学性污染

C.放射性污染

D.生物性污染

E.热污染

当施工图没有变更时，直接在施工图上加盖()形成竣工图。

A.竣工图章 

B.项目部用章 

C.建造师执业用章 

D.企业印章

陷窝细胞(lacunarcell)

Most of us fear getting up and speaking in public. Many people don’t like to go gathering where they don’t know anyone, but while most of us soldier on (迎难而上), those with social anxiety disorder are often stopped by the terror and worry.

Research shows that around fifteen million Americans suffer from social anxiety disorder. People in this condition feel that they are always being watched. Even though they know these fears are unreasonable, they cannot overcome their fears on their own.

Social anxiety disorder sufferers are often misdiagnosed with conditions such as schizophrenia (精神分裂症) and personality disorder. Many feel lonely, and are unsure whether anyone else can understand their thoughts and emotions. This can lead to withdrawal from most social situations, even to being unable to hold employment.

Those who suffer from social anxiety disorder are often dismissed(辞退)as being shy. This is simply not the case; shyness is not even a symptom of social anxiety disorder. The majority of sufferers find their symptoms linked to specific situations, rather than all types of social interactions.

An important step in overcoming social anxiety disorder is seeking out a therapist who specializes in training this type of disorder. Group treatment has been shown to be especially effective. Medication also help reduce the symptoms, but it should not be used as a replacement for psychotherapy (心理疗法).

On your own, you can help reduce the symptoms by taking deep breaths and practising medication or prayer. Alcohol and nicotine should be avoided, as both can cause panic attacks. Exercises can relieve the symptoms, because it burns up the chemicals in your body that cause stress.

54.Patients with social anxiety disorder_________________.

A. are shy in all situations

B. feel they don’t understand themselves

C. are anxious and terrified while speaking in public

D. feel it is unreasonable to be watched by others

55. We know from the passage that___________________________________.

A. most people will try to fight against social anxiety disorder

B. shyness is the main symptom of social anxiety disorder

C. people who feel lonely are often misdiagnosed with social anxiety disorder

D. psychotherapy is very important in treating social anxiety disorder

56. According to the passage, if Jack suffers from social anxiety disorder, he should_________.

A. burn up some unsafe chemicals             B. ask for help from a doctor

C. practise speaking in public                 D. resign from his present job

57. We are most likely to find this passage in__________.

A. American Culture                        B. Cross Country

         C. Family Doctor                          D. English Nature

牙钳使用时，错误的是（）

A.钳喙应尽量向根方夹持

B.夹持患牙要紧，避免断根

C.多个牙拔除时尽量选用万能牙钳

D.手握钳柄近末端处

E.使用牙钳用力时不能过急、过猛