84. According to the passage, what was the difference between “ Davy Crockett”
almanacs and others?
A) Davy Crockett almanacs predicted the weather.
B) Davy Crockett almanacs were printed in Germany.
C) Davy Crockett almanacs included stories.
D) Davy Crockett almanacs contained long tales.
Read the text and answer the questions according to it.
Some people keep fish as a hobby. They keep fish in a fish tank in their home. A good size for a fish tank is one that will hold 40 or 80 litres of water. Fish tanks can be round, square or rectangular. Most fish tanks are made of glass. Do not put a fish tank too close to a window. Too much sunlight makes the water too warm. A few plastic green plants and small stones called gravels need to be at the bottom of the tank. Gravels and plastic green plants are not only for decoration but also they help the fish feel less stressed. A fish tank also needs a pump that pulls air into the water. A water filter will help to keep the water clean. A heater will keep the water temperature just right about 25°C.
85. What is the main idea of the text?
A) How to keep fish in a fish tank
B) A perfect temperature for sea water
C) Different types of fish in the lakes
D) How much water a fuel tank can hold
86. According to the passage, what helps the fish to feel less stressed in a fish tank?
A) small stones
B) water heaters
C) water filters
D) water pumps
87. According to the passage, why is a water filter important for a fish tank?
A) It helps fish to breathe in the tank.
B) It protects fish from the sunlight.
C) It keeps the water from being dirty.
D) It provides the tank with fresh air.
88. According to the passage, what keeps the water warm in the tank?
A) a pump
B) a heater
C) a filter
D) a gravel
Read the text and answer the questions according to it.
Substance can be a liquid, a solid, or gas. Water can change into three forms. It only depends on water temperature. When water is a liquid, we drink it. When water is cold, it is a solid, such as ice or snow. When water is a gas, we call it water vapour. When water boils, it changes into vapour or steam. The water vapour is collected in clouds. Then it falls to the ground as rain or snow. Some people think that the amount o f water changes when the water moves from one state to another. Actually the amount of water always stays the same, no matter which state the water is in. People are tricked because o f the amount o f space which water uses in its different forms. Solid form takes up more space than liquid form. Vapour form takes up the least amount o f space.
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