通电导体周围存在有（）。 A.电场 B.磁场 C.电场线 D.电压

以下关于银行本票基本规定的正确表述是()。

A、银行本票见票即付

B、单位和个人在全国范围需要支付各种款项，均可以使用银行本票

C、银行本票可以用于转账，注明现金字样的银行本票可以用于支取现金

D、办理银行本票签发、结清、退款、超期付款和兑付业务超过规定限额的，须经主管授权

阅读理解。

     A study by St.. Louis University has found that a lovable dog named Sparky and a robotic dog,

AIBO, were about equally effective at reducing the loneliness of nursing home residents. The study

confirmed previous findings that dogs have a good effect on nursing home residents.

Dr. Andrew Smith led the Stanford University team that built a home-assistance robot. "If humans can

feel an emotional tie with robots, some day they could be not just our assistants, but also our

companions," he said.

     To test whether residents responded better to Sparky, a trained dog, or the Sony-made robotic dog,

researchers divided 38 nursing home residents into three groups at three long-term care centers in St.

Louis.

One group had weekly 30-minute one-on-one visits with Sparky; another group had similar visits with

AIBO; a control group had no contact with either dog. The groups' respective levels of loneliness were

tested by having them answer a number of questions at the beginning and near the end of the visits.

After two months, both groups that had contact with the dogs were less lonely and more attached. Most

of the elderly regarded Sparky, a 9-year-old dog, as an audience for their life stories, said investigator

Marian Banks.

     "He listened attentively, wagged his tail, and allowed them to pet him," said Banks, who adopted and

trained Sparky after finding him in a street behind her home seven years ago.

     Those who were together with AIBO took a little longer to warm to the robotic creature. Over time,

however, they grew comfortable with him, and petted and talked to him. He would respond by wagging

his tail, vocalizing, and blinking his lights..

     "AIBO is charming once you start to interact with him," said the study's author, Dr. William Banks,

" He's an attractive sort of guy. He gives a feeling of being personal, not just a robot."

1. Before the new study, it was known that ____.

A. robots were effective at reducing people's loneliness

B. robots could build close connection with humans

C. dogs could help get rid of old people's loneliness

D. dogs and robots were equally effective at reducing loneliness

2. Those who had contact with the robotic dog found that ___.

A. they didn't feel comfortable with it

B. it was hard for them to interact with it

C. they weren't comfortable with it at first

D. the robot's vocalizing and blinking confused them

3. The findings of the researchers tell us that___.

A. robots are better at caring for old people than nurses

B. robots can to some degree replace dogs as companions for old people

C. it's easy for people to become close with robots

D. every home will have a robot assistant one day

4. What would be the best title for the passage?

A. Robots Serve People Better Than Thought

B. No More Lonely Old Age with Emotional Robots

C. Advanced Technology Used to Cheer up the Elderly

D. Robots and Dogs Can Equally Cheer up the Elderly

生殖细胞突变的后果是（）。

A.良性肿瘤

B.细胞衰老

C.遗传性疾病

D.癌变

E.动脉粥样硬化

国家开发银行的“二十字方针”是什么？

涉外交往中接待穆斯林客人时能对他们祝酒吗？