中国大学MOOC: Usually, polymers have the structures of _________, and various isomeric configurations
举一反三
- 中国大学MOOC: Dogs usually have an _______ sense of smell.
- 中国大学MOOC: How many types of booth do we usually have ?
- 中国大学MOOC: Polymers transmit heat mainly through free electrons.
- 中国大学MOOC: The famous American Marketing Association defines advertising as “the personal communication of information usually paid for and usually persuasive in nature about products, services or ideas by identified sponsors through the various media”.
- 中国大学MOOC: The body paragraphs usually have three parts: topic sentence, support and wrap-up.