[单项选择]The new laws threaten to（）many people of most freedom.
A. deprive
B. startle
C. refute
D. destine

[简答题]One of the most interesting new uses for glass is in telephone communication. Scientists have developed glass fiber as thin as human hair which is designed to carry light signals. When the light reaches the other end, it is first changed into electrical signals, which are in turn converted into sound messages.

[单项选择]How many laws are there discussed in the speech

[单项选择]Not having been discovered, many laws of nature actually exist in nature.
A. 虽然许多自然界的规律尚未发现，但它们确实存在于自然界中。
B. 存在于大自然中的很多规律还没有被科学界发明出来。
C. 许多自然界的规律实际上存在于自然界中，尽管不能被发现。
D. 尽管很多自然界的规律没有被找出，但是这些规律实际上存在于自然界中。

[单项选择]Not having been discovered，many laws of nature actually exist in nature．
A. 虽然许多自然界的规律尚未发现，但它们确实存在于自然界中。
B. 存在于大自然中的很多法律还没有被科学界发明出来。
C. 许多自然界的规律实际上存在于自然界中，尽管不能被发现。
D. 尽管很多自然界的规律没有被找出，但是这些规律实际上存在于自然界中。

[单项选择] Passage One

In many countries today, laws protect wildlife. In India the need for such protection was realized centuries ago.
About 300 B. C. an Indian writer described forests that were somewhat like national parks today. The killing of game animals was carefully governed. Some animals were fully protected. Within the forest, nobody was allowed to cut trees, burn wood, or trap animals for their furs. Animals that became dangerous to human visitors were trapped or killed outside the park, so that other animals would not become uneasy.
The need for wildlife protection is greater now than ever before. About a thousand sorts of animals are in danger of extinction, and the speed at which they are being destroyed has been putting on. With mammals, for example, the speed of extinction is now about one sort every year; from A. D. 1 to 1800, the speed was about one sort ever), fifty years. Everywhere, men are trying to solve the problem of sav
A. was understood centuries before this time
B. was described by an Indian writer about 2300 years ago
C. is met in many countries today
D. is carried out in forests as well as in national parks