国际各类电文，例如窄带直接印字电报、卫通电传和传真，保管期为（）。A、三年 B、二年

张某是某单位干部，一直单身，居住在流水街50号。1998年春节前后，张某因病去世，留下银行存款10万元，古董字画若干。张某所在的街道办事处认为，张某无继承人，未留下遗嘱，因此向区人民法院申请认定张某的财产为无主财产，区法院受理后，经审查核实，发出财产认领公告。因无人对张某的遗产主张权利，公告期满，区法院判决认定，张某的遗产为无主财产。半年后，从外地来了一年轻人，声称是张某的亲生儿子，经法院审查核实，该子系张某下放时与当地一妇女的私生子。根据上述案情，请回答下列各题：

(2)在该案中，财产认领的公告期间应为： ( )

A．30天

B．60天

C．90天

D．1年

阅读理解。

     Stonehenge may have been a prehistoric health center rather than a site for observing stars or a temple

in honor of the dead, scientists said yesterday. New evidence unearthed at the World Heritage Site in more

than 40 years suggests that the monument was a place where the diseased and injured went in groups,

seeking cures.

     After a two-week dig, scientists have concluded that Stonehenge was "the ancient healthcare centre of

southern England" because of the existence of "bluestones"-the smaller columns of dolerite (辉绿岩) that

formed an earlier stone structure.

     By dating pieces of remains to around 7330BC, Tim Darvill, of Bournemouth University, and Goff

Wainwright, of the Society of Amtiquaries have found that hunter-gatherers were at the site on Salisbury

Plain 4,000 years earlier than thought. The first stage of Stonehenge, a round earthwork structure, was

built around 3000BC. Professor Wainwright added: "I did not expect the degree of complexity we discovered.

We're able to say so much more about when Stonehenge was built and why-all of which changes our

previous understanding of the monument."

     The research reveals the importance of the henge's famous bluestones. Hundreds of bluestone chips

gathered at the site have led the team to conclude that the bluestones were valued for their curing effects-the

key reason that about 80 of them, each weighing up to 4 tons and a half, were dragged more than 150 miles

from the Preseli Hills to Wiltshire. After years of research, Professors Darvill and Wainwright have

concluded that, for thousands of years, the Preseli mountain range was home to magical health centers and

holy wells.

      Even today there are those who believe in the curing powers of the springs for coughs and heart disease,

and people who use crystals and bluestones for self-curing. Radiocarbon tests have also revealed that the

construction of the original bluestone circle took place around 2300BC, three centuries later than originally

thought. Interestingly, on the same day died the "Amesbury Archer"-a sick traveler from the Swiss or

German Alps who had an infected knee-whose remains were discovered about five miles from Stonehenge.

The professors believe that he was a devoted religious person who was hoping to benefit from the curing

powers of the monument.

1. Stonehenge is recently believed to be a place for people _____.

A. to recover from poor health

B. to observe star movements

C. to hold religious ceremonies

D. to gather huge bluestones

2. What can be inferred about Stonehenge from the passage?

A. The springs could cure coughs and heart disease best.

B. The new discovery was the same as what had been expected.

C. Some huge bluestones were not produced at Stonehenge.

D. The original bluestone circle was thought to be constructed around 2000BC.

3. The sick traveler in the passage is supposed to be ______.

A. a devoted religious person from Stonehenge

B. one of the earliest discoverers of Stonehenge

C. the first explorer to test the magical power of bluestones

D. a patient trying to cure his infection at Stonehenge

4. Which of the following might be the best title for the passage?

A. Stonehenge: A New Place of Interest

B. Stonehenge: Still Making News

C. Stonehenge: Heaven for Adventurers

D. Stonehenge: Still Curing Patients

如果操作性条件反射被一种随后出现的强化物所强化，那么，将该强化物撤除，此操作性反应就会随之( )。

A．消退
B．自然恢复
C．类化
D．分化

下列各项中，承担违约责任的主要方式是( )。

A．继续履行
B．采取补救措施
C．赔偿损失
D．支付违约金

按照计重收费车辆的车货总质量认定标准，三轴货车（由二轴汽车和一轴挂车组成的汽车列车）为（）吨。

A、17

B、20

C、25

D、27