题目内容：

Wang Daheng, Father of Chinese Optical Engineering

In 1949, the field of applied optical（光学）science didn't exist in China. Understanding its importance for national strength, the Chinese government paid much attention to optical research.

Wang Daheng, a respected optical physicist, devoted his whole life to this cause. He kept watching on the development of China's first optical glass, first electronic microscope, first laser device, and first large-size optical measuring equipment, and helped to found the Chinese Academy of Engineering. He was called the father of Chinese optical engineering.

As a teenager, Wang Daheng often followed his father to the observatory and became greatly interested in the apparatus（仪器）there. In 1936, he graduated from Tsinghua University with a degree in physics. Two years later, he won a government scholarship to study in England. After earning his master's degree from Imperial College London in 1940, he began his doctoral studies in optical physics and technology.

In 1948, Wang gave up his established career and comfortable life in the West and returned to his motherland with the aim of empowering it（增强它的自主权）through science and technology. At the time China did not have the capability to produce optical measuring equipment on its own. In 1951, Wang was instructed to found an institute of fine mechanics and was appointed its first president. Within less than two years, Wang and his team produced the first group of China-made optical glass. Over the following six years, they went on to develop the country's first electronic microscope, first high-precision theodolite（经纬仪）, first optical range finder, and five other optical devices, laying the foundation for China's precision optical instrument industry. In 1961, they independently developed the ruby laser in China. In addition to scientific research, Wang advanced the study of optics in higher education.

Starting in the 1960s, Wang participated in optical research related to the development of nuclear bombs, missiles, and man-made satellites. In 1970, China successfully launched the Dongfanghong I satellite, of which Wang was one of the designers. When the satellite returned to Earth, the devices they designed brought back clear images of our home planet as seen from the outer space for the first time.

To close the technological gap between China and developed countries, Wang and three other scientists made the suggestion of drawing up a state hi-tech development plan in 1986, which led to the famous 863 Program.

In 1992, Wang and a group of other scientists called for the creation of the Chinese Academy of Engineering. In the following years, he won many honors from the state. He passed away in Beijing aged 96 on July 21, 2011 after living a full and fruitful life.

1.Why did Wang Daheng return to China from West?

A.To earn his master's degree. B.To get together with his family.

C.To do contribution to his country. D.To won honors in the motherland

2.Why is Wang Daheng called the Father of Chinese Optical Engineering?

A.Because he drew up the hi-tech development.

B.Because he participated in the optical research.

C.Because he was a famous and respected physicist.

D.Because he achieved many firsts in Optical engineering.

3.Which word can best describe Wang Daheng?

A.Friendly. B.Positive.

C.Devoted. D.Humorous.

4.The passage is organized in order of ___________.

A.time B.space

C.importance D.effectiveness