It can be inferred that railroad refrigerator cars came into use ______.A．before 1860B．bef

It can be inferred from paragraph 2 that before t

It can be inferred from the passage that lighthou

It can be inferred from the passage that lighthou

It can be inferred from the passage that apologiz

It can be inferred from Paragraph 2 that Christop

It can be inferred from the passage that by 1870