【简答题】Rivers are the veins of the Earth, transporting the water and nutrients ( 营养物 ) needed to support the planet’s ecosystems, including human life. While many nutrients are essential to the survival of l...
【判断题】“In a certain city, a water supply company issued a noticeabout cutting off the water supply. At first, the public were only told thatthe running water company needed to service the pipeline. However,...
【简答题】AV Clip 5: The Importance of Water Listen to a passage three times and while listening, you are to put the missing word in each numbered blank according to what you hear. Experts say water is importan...
【判断题】The passenger needed a cup of water to take medicine.
【单选题】The water needed to make one cotton T-shirt is enough for a person to drink for __ days.
【判断题】Air conditioning is needed to remove the energy and water vapor and maintain comfort in the interior space in most areas of the country