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问题 选择题

下列说法正确的是 （   ）

A．Cl2是双原子分子，H2S是三原子分子，这是由共价键的方向性决定的

B．H2O与H2S的空间结构一样是由共价键的饱和性决定的

C．并非所有的共价键都有方向性

D．两原子轨道发生重叠后，电子在两核间出现的概率减小

答案

答案：C

题目分析：Cl2是双原子分子，H2S是三原子分子，这是由共价键的饱和性决定的，A不正确；H2O与H2S的空间结构一样是由中心原子含有的孤对电子决定的的，与共价键的饱和性无关系，B不正确；C正确，例如氢气中的共价键没有方向性；两原子轨道发生重叠后，电子在两核间出现的概率增大，D不正确，答案选C。

点评：该题是基础性试题的考查，试题紧扣教材，基础性强。主要是考查学生对共价键形成以及共价键特点的熟悉了解程度，有利于调动学生的学习兴趣，激发学生的学习积极性。

判断题

郭沫若写的对联“世上疮痍，诗中圣哲；民间疾苦，笔底波澜”概括了白居易的伟大成就。
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单项选择题

Chinese Buddhist Music Catches Audience in HK


中华佛教音乐吸引香港听众


The Hong Kong Cultural Center in Victoria Bay was packed on Thursday night, and loud applause periodically echoed through the neon lit sky. It was not rock music nor was it pop—it was traditional Chinese Buddhist music that made an instant hit in the modern metropolis.
Hong Kong is the fourth leg of the Buddhist music performance tour by a troupe consisting of more than 130 monks from the Chinese mainland and Taiwan. And this is also the first time monks from across the Taiwan Strait had jointly set up a troupe to perform, on global stages.
Crowds of Hong King residents were lining up at the local port waiting to welcome members of the troupe who were sailing in from Macao, where they had just ended another successful performance on Wednesday night.
The monks returned the enthusiasm of the residents with a powerful performance. Almost without sleep, the monks drove to the concert hall preparing the stage and doing the rehearsals.
Buddhist music, which originated from ancient India, found its way into China some 2,000 years ago, and after absorbing elements of traditional Chinese folk music, court music and other religious music, a unique form which is now called Chinese Buddhist music came into being.
The monks of the troupe come from prestigious Buddhist temples including Fo Guang Shah Temple in Taiwan, Shaolin Temple in central Henan Province, Labrang Temple in northwestern Gansu Province, and General Temple in southwestern Yunnan Province, representing the three branches of Buddhism in China, namely Chinese Buddhism, Tibetan Buddhism and Pali Buddhism.
The wind sweeping across the Victoria Bay was cool, but the atmosphere in the concert hall was hot. The audience was mesmerized by the great variety of genres of Chinese Buddhist music．
"It’s great to see so many genres of Chinese Buddhist music performed on the same stage," said a female bank employee surnamed Chang, "It’s so fascinating," she said．
Calling it a happy event in Hong Kong, the Venerable Kwok Kuang, president of the Hong Kong Buddhist Association, said that the concert served as a prelude to the display, in Hong Kong on May 26, of a relic from Famen Temple preserved in Xi’an, capital of northwest China’s Shaanxi Province.
He said that Buddhism and Buddhist music in the Chinese mainland, Taiwan and Hong Kong had the same roots, and through the performance by monks from across the Taiwan Strait, the traditional religious art would be further developed and bring more happiness to the Chinese.
Co-sponsored by the Chinese Buddhism Association of China and Fo Guang Shan Temple in Taiwan, the troupe was formed in February this year and has since staged four successful performances in Taiwan and Macao, and will move on to Los Angeles and San Francisco in the US and Vancouver of Canada from Friday.
Hailing the joint performance as a major event in the history of Buddhism, Hsin Ting, deputy chief of the troupe and abbot of Fo Guang Shan, said that both the monks and the support staff had been working together very harmoniously ever since the formation of the troupe, indicating their inherited p ties.
"I hope the troupe’s tour to North America will help the world community better understand Chinese traditional culture, especially the harmonious relationships among the people across the Taiwan Strait," he said．

How was the Chinese Buddhist music troupe received in Hong Kong

A．It was welcomed like any other rock or pop music bands.
B．It was not as welcome as rock or pop music bands.
C．It was so welcome that it would visit Hong Kong for the fourth time.
D．It caused a great sensation among the local people.
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