The life of Albert Einstein is a model in many ways (31) both natural and political scientists.
First of all, he always employed the scientific method of (32) truth from facts. He firmly believed (33) he put it, that "there is nothing incomprehensible (34) the universe", and through painstaking work explained many of the phenomena thought to be "incomprehensible" in his day. Einstein was also never afraid to (35) mistakes when facts (36) his theories wrong.
Second, Einstein’s contributions showed the great importance of theoretical work to scientific effort. (37) he himself rarely worked in laboratories, the concepts he developed led (38) many of the scientific advances (39) have shaped modem technology.
Third, Einstein believed very deeply that scientists must (40) a moral and social consciousness. (41) this way, he provided inspiration for a whole generation of scientists who became active in the communist movement.
Einstein is often portrayed in bourgeois writings (42) a "Genius" whose theories are (43) complicated that no one (44) a few best scientists can understand them. But he (45) rejected the efforts to (46) him in a position far (47) other people. He was well-known for his (48) manner and often stressed to in terviews that his accomplishments would certainly have been achieved by others had he never lived.
Actually, Einstein’s (49) of relativity and his other scientific works are not that hard to understand with a little study. But beyond learning Einstein’s theories, his overall attitude (50) science as a tool to liberate humanity is something from which everyone can and should learn.

[A] Money．
B. Freedom．
C. Knowing different people．
D. Traveling a lot．

Almost obscured by this torpor is the fact that there has been some remarkable progress over the past five years—real changes in the attitude of ordinary people in the Third World toward family size and a dawning realisation that environmental degradation and their own well-being are intimately, and inversely, linked. Almost none of this, however, has anything to do with what the bureaucrats accomplished in Rio.
Or it didn’t accomplish. One item on the agenda at Rio, for example, was a renewed effort to save tropical forests. (A previous UN-sponsored initiative had fallen apart when it became clear that it actually hastened deforestation.) After Rio, a UN working group came up with more than 100 recommendations that have so far gone nowhere. One proposed forestry pact would do little more than immunizing wood-exporting nations against trade sanctions.An effort to draft an agreement on what to do about the climate changes caused by CO₂ and other greenhouse gases has fared even worse. Blocked by the Bush Administration from setting mandatory limits, the UN in 1992 called on nations to voluntarily reduce emissions to 1990 levels. Several years later, it’s as if Rio had never happened. A new climate treaty is scheduled to be signed this December in Kyoto, Japan, but governments still cannot agree on these limits. Meanwhile, the U.S. produces 7% more CO₂ than it did in 1990, and emissions in the developing world have risen even more sharply. No one would confuse the "Rio process" with progress.
While governments have dithered at a pace that could make drifting continents impatient, people have acted. Birth-rates are dropping faster than expected, not because of Rio but because poor people are deciding on their own to reduce family size. Another positive development has been a growing environmental consciousness among the poor. From slum dwellers in Karachi, Pakistan, to colonists in Rondonia, Brazil, urban poor and rural peasants alike seem to realize that they pay the biggest price for pollution and deforestation. There is cause for hope as well in the growing recognition among business people that it is net in their long-term interest to fight environmental reforms. John Browne, chief executive of British Petroleum, boldly asserted in a major speech in May that the threat of climate change could no longer be ignored.