hitch = problem or setback?

[Linh Bui Hoang]

Please help me with the two following multiple-choice questions. The task is to choose the word that is closest in meaning to each underlined word.
1. The furnace in the factory was turned up as high as possible.
A.Temperature B.oven D.kiln

Could a furnace be an oven? Though I usually hear about an oven as a kitchen appliance but I think a furnace could be a special kind of oven

2. There was a hitch in the program, which caused a two-hour delay.
A.problem B.setback

I feel that both choices are acceptable but setback may be the best choice because it refers to delay. But my teacher chose A.

[Jamie (K)]

In 1, the answer is either "oven" or "kiln". Without seeing what the furnace looks like or what it is used for, it's impossible to know which one is correct. For example, a glass furnace is a type of oven used for heating glass during the manufacturing process. Sometimes a kiln is also called an oven, particularly if it's very big.

In 2, both answers can be correct, depending on what kind of program it is. If we mean a computer program, "hitch" would be "problem". If it is a program of activities, for example the program for a festival, or maybe a design program for developing a manufactured product, then "setback" would be best, but "problem" would also work.