什么是透明变性？

溶气气浮法的优点是______都处于稳定环境，絮体很少被破坏。

A．絮凝体的下沉

B．气泡形成

C．絮凝体的上浮

D．气泡黏附于颗粒

数电断电后所存信息消失的存贮器是（），不消失是（）。

The key to learning English well is to overcome your shyness and fear , said taxi driver Zhang, who is attending the English training program run by the West Lake Taxi Company. “Out teacher Mrs.Yang encourages us many times to open our mouths and speak English out loudly in her class ,” said Zhang.

Chen Zhong, another fluent(流利的) English speaker, shared his opinion. “I didn’t think English was important to us at the beginning since many foreign passengers could speak some Chinese to me. But when I did speak some English, the foreigners were always pleased and said I was the first taxi driver they had met who could speak English.

Chen said he found studying English extremely interesting. The 160 minutes’ study per week was simply not enough for him. He bought books , tapes and VCDs to learn English on his own.. “Though it cost me a lot of time and energy , I did find it is useful in the long term” he said.

The reward of learning English is more than Chen has expected. Now he has made several foreign friends who book his taxi when they need. Some foreign passengers even give him tips (小费when he communicates with them in English.

To facilitate their studies, the company developed a bilingual(双语的) tape which includes the most frequently used sentences for taxi drivers and the names of major streets and buildings in Shenzhen.

“It has helped me out, ” said Chen. “Once I failed to express ‘Chinese Folk Culture Villages’ in English when I was asked to go there by a foreigner, I played the tape and got its meaning.”

59. What difficulty did Mr.Zhang have learning English at first?

A. He had no time to study English

B. His company didn’t allow them to study English

C. He had no courage to speak out.

D. He had no chance to speak English.

60. Which of the following is NOT the benefit Chen gets from learning English?

A. He gets some good advice on learning English from foreigners.

B. He earns more money from some regular foreign customers.

C. He has to spend both money and effort learning English.

D. He gets great fun and encouragement in learning English.

61. We can infer from the passage that _____.

A. the company is the first to encourage its drivers to learn English

B. all the drivers have made money after learning English

C. the company has developed and English tape for its drivers

D. the tape is welcomed by the drivers learning English

62. What is the probable meaning of the underlined word “facilitate” in the fifth paragraph?

A. To make easy  B. To increase     C. To encourage   D. To check

邓 * * 说：“任何外国人不要指望中国做他们的附庸，不要指望中国会吞下损害我国利益的苦果”，这说明 [     ]

A．和平共处五项原则是我国对外关系的基本立场

B．独立自主是我国外交政策的基本立场

C．促进世界的和平与发展是我国外交政策的基本准则

D．不与任何大国结盟是我国外交政策的基本目标

简述从事授徒讲学活动的书院在唐末萌芽的主要原因。