4. What is the selection about?
c. Cold air and warm air
a Natural Ventilation
d. Artificial ventilation
b. Securing fresh air
5. Which sentence gives a hint to the purpose of the text?
a. In the early years, natural ventilation is applied at home.
b. Electric fan, aircon, and coolers are artificial forms of ventilation
c. Natural ventilation is done by allowing air to enter a room directly from
the outside.
d. Then, air is forced out from the upper part of the window by the cooler
air.
6. What kind of text-type is used?
a. Classification
b. Enumeration
c. Explanation
d. Time order