Based on the above figure, If is a price ceiling, then the number of units of a good that will be exchanged at the price ceiling (i.e., ) is:

Based on the above graph, Total surplus (TS) is ________________ in a market with a price floor (i.e., ) The market is not allowed to move to equilibrium. 

Based on the above graph, Consumer surplus (CS) is ________________ in a market without any price controls.  The market is allowed to move to equilibrium. 

Based on the above graph, Producer surplus (PS) is ________________ in a market with a price floor (i.e., ) The market is not allowed to move to equilibrium. 

B. Vocabulary Part 2: Read the Chinese vocabulary and match the correct English.     

True or False: Historians are able to read the language of the Indus Valley people. 

Which of the following valence numbers will make the best insulator?

When two or more elements are chemically combined a/an ____ is formed.

Of the given valence numbers, which one will make the best conductor?

What is the SI unit for exposure?