中国大学MOOC: It’s a ball that sinks because it’s filled_____ salt water.
举一反三
- It’s a ball that sinks because it’s filled_____ salt water. A: of B: with C: out D: in
- Only 3 percent of the world’s water is fresh water. The rest _______ salt water. A: be B: am C: is D: are
- The major osmoregulatory problems of saltwater fishes are ( ). A: water gain and salt loss B: water loss and salt gain C: water gain and salt gain D: water loss and salt loss E: nonexistent because freshwater fishes are isosmotic to their environment
- My teacher told me that salt water _________ (freeze) at a lower temperature than fresh water.
- 中国大学MOOC: The world’s population is growing ______, and there is ______ land and water for growing rice.