Section I Open Your Ears

1. Section I Open Your Ears Listen to the passage twice and fill in the blanks with what you hear. And then discuss with your partner about the population problem. It is well-known that there has been a __________ increase in world population. But it is probably less well-known that the extinction rate of wildlife __________ is experiencing a parallel trend. drastic Click me species Click me

2. Section I Open Your Ears Take the United States for _________ . In 1990, U.S. population reached an unprecedented level of 250 million, which is approximately 250 times of that of 1800. On the other hand, wildlife species are instance Click me

3. Section I Open Your Ears ______________ from the country at an __________rate. By 1990, about 70 wildlife species would never be seen in U.S.. We are fully ___________ in declaring that the explosive population growth has had an _________ effect on the survival of wildlife species and will be a ________threat to the wildlife resources if no _________ actions are taken. disappearing alarming Click me Click me justified Click me adverse Click me immediate Click me Click me constant

4. Section I Open Your Ears Nothing has ever _________ the magnitude and speed with which the human species is __________ the physical and chemical world. It has been demolishing the ____________ we are living in. equaled Click me altering Click me environment Click me