骨软化症的特点不包括（） A.患者多于青春期发病，与VitD缺乏有关 B.主要表现为

开立证券账户应坚持( )原则。

A．合法性与及时性
B．合法性与真实性
C．及时性与全面性
D．及时性与真实性

如果本期发现的、属于以前年度的重大差错，但不涉及损益的，在调整会计报表时，应调整的会计报表项目是( )。

A．期初未分配利润

B．会计报表相关项目的期初数

C．期末未分配利润

D．会计报表相关项目的本年数

下列哪种病原体不能通过滤菌器

A．解脲脲原体

B．L型细菌

C．肺炎支原体

D．生殖道支原体

E．钩端螺旋体

灌注制作锤造冠石膏代型的模型时，模型的厚度至少要有

A．5mm
B．10mm
C．15mm
D．20mm
E．30mm

Doctors have known for a long time that extremely loud noises can cause hearing damage or loss.The noise can be the sound of a jet airplane or machines in factories of loud music or other common sound at home and at work. A person only needs to hear the noise for little mire than one second to be affected.

An American scientist has found that using aspirin (阿斯匹林) increase the temporary (暂时的)hearing loss or damage from loud noise. He did an experiment using a number of students at a university who all had normal hearing. He gave them different amounts of aspirin for different periods of time, then he tested their hearing ability. He found that students who were given four grams of aspirin a day for two days suffered much greater temporary hearing loss than those who did not use aspirin. The hearing loss was about two times as great.

The scientist said millions of persons in the U.S. use much larger amounts of aspirin than were used in his experiment. He said these persons face a serious danger of suffering hearing loss from loud noise.

小题1:.

.Doctors have long known that__________.

A．one may lose his hearing when he hears a terribly loud noise.

B．one may become deaf when he hears a loud noise.

C．loud noises can cause damage to the hearing of the young people only

D．common sounds at home are not harmful to the ear小题2:.

.One conclusion you can draw from the passage is that aspirin________.

A．makes hearing damage from loud noise worse

B．should never be taken more than four grams

C．can damage one’s hearing when it is given more than four grams daily

D．always increases hearing loss by two times小题3:.

. The American scientist did his experiment in order to find ________.

A．how much aspirin would affect a person’s hearing

B．how much aspirin should be given in the treatment of the patients with hearing damage from loud noise

C．whether aspirin would increase the temporary hearing damage from loud noises

D．whether the people who had hearing damage should use aspirin