举一反三
- Solar water heaters would be immesely ______ since it would help dramatically lower our energy costs.
- In recent years, a growing body of research has shown that our appetite and food intake are influenced by a large number of factors besides our biological need for energy, including our eating environ
- By 2030 the world ’ s demand for energy is projected to more than double.
- It is expected that the world's population will reach ______ by the end of the century. A) 2 billion people C) 80 percent of all people B) 4.4 billion people D) 6.4 billion people A: It is expected that the world's population will reach ______ by the end of the century. B: 2 billion people C: 4.4 billion people D: 80 percent of all people E: 6.4 billion people
- 中国大学MOOC: The world’s population is growing ______, and there is ______ land and water for growing rice.
内容
- 0
Due to the country’s growing rate of urbanization, China’s migrant population _______ to be over 200 million by 2020. A: predicts B: is predicted C: will have been predicted D: will be predicted
- 1
Can our __________ meet the needs of our population growth?
- 2
From this speech, what should we do to practice good personal hygiene? A: regularly wash our hands with soap and water B: avoid touching our face with our hands C: clean objects and surfaces that are touched often D: avoid raw food and unclean water
- 3
中国大学MOOC: In order to inaugurate a new era in energy, we must act quickly and work toward international to find the most effective solutions to our energy problems. (collaborate)
- 4
Fresh fruit and vegetables______. A: contain more vitamin C than any other food B: decrease our resistance to colds C: contain every kind of vitamin D: increase our susceptibility to influenza