下列属于机械传动的有（） A.齿轮传动 B.蜗轮蜗杆传动 C.带传动 D.链传动

南斯拉夫某城有一块石碑，碑文是：“1914年6月28日，加夫里诺·普林西普在这里用他的子弹，表达了我们人民对暴虐的反抗和对自由的向往。”当时“他的子弹”射向[ ]

A．德国皇帝威廉二世

B．奥国皇储斐迪南大公

C．法国国王路易十四

D．俄国沙皇尼古拉二世

公安机关在刑事诉讼活动中，为了保证准确有效地执行法律，必须坚持同人民检察院、人民法院分工负责，互相配合，但不必坚持互相制约。( )

第二部分 阅读理解 (满分30分)

阅读下列短文，从每题所给的四个选项 (A、B、C和D) 中，选出最佳选项。 (每小题2分)

Wang Hao and Wang Liqin, two of China’s top tennis players, both saw the World Table Tennis Championships as a chance to prove themselves. But there was only one champion and Wang Hao, 25, won it last Tuesday in Yokohama, Japan.

Wang Hao, who won the men’s doubles title with Chen Qi last Monday, played with spirit to best Wang Liqin 11-9, 13-11,11-5,11-9.

Wang Hao said it was his mental toughness (心里稳定) that made the difference. “I was disappointed by my performances in past championships and the last two Olympic Games. But I have tried to pull myself together and prepared well. This is the result.”

Wang Hao said he always understood the importance of physical training and technical skills. Now he knows the need for mental preparation as well. Having two Olympic silvers had left him feeling bitter (痛苦的). The bitterness perhaps explains why he has not always played at his best in the past.

“I’ve come to understand that you can learn important lessons (教训) from failure,” he said. “Losing can build your character and make you a stronger player.” His next goal, or dream, is to win the medal at the London Olympics in 2012.

Liu Guoliang, head coach of China’s table tennis team, sang the praises of Wang Hao’s victory. “This is just the beginning of his rise,” said Liu. “It’s the confidence-booster he needs to make further progress.”

1 According to the passage, Wang Hao won ____ gold medals in the World Table Tennis Championships in Yokohama, Japan.

A. only one    B. two     C. three   D. four

2From Wang Hao, we can know the main reason for his beating Wang Liqin is his ____ .

A. technical skills   B. physical training       C. mental toughness       D. past experience

3What is the next goal of Wang Hao?

A. To win the title of the champion at the 2012 Olympics.

B. To beat Wang Liqin again.

C. To prove himself in the future competitions.

D. To win more goals in future.

4 What can we learn from Wang Hao?

A. Failure is the mother of success.

B. Never give until you succeed.

C. Where there is a will, there is a way.

D. A good beginning makes a good ending.

5 The passage is mainly about how to ____ .

A. get gold medals B. beat Wang Liqin C. play table tennis D. beat Chen Qi

变压器具有改变（）的作用。

A、交变电压

B、交变电流

C、变换阻抗

D、以上都是

均裂