89. According to the passage, what makes water change its form?
A ) snow
B) space
C) temperature
D) cloud
9 0 . According to the passage, when water boils it becomes ....
A) ice B) liquid
C) vapour D) solid
91. All o f the following statements are TRUE about water vapour, EXCEPT ...
A) Water vapour changes its amount.
B) Vapour is actually water in gas form.
C) Water vapour is collected in clouds.
D) Water vapour turns into rain or snow.
92. According to the passage, which form o f water takes the most amount o f space?
A) vapour B) steam
C) liquid D) solid
Read the text and answer the questions according to it.
The force that pulls things towards the ground is called gravity. Gravity is something that you can’t see or touch. Isaac Newton named this force as “gravity” after he watched an apple fall from a tree. He noticed that things always fell down. They never went up. Later he figured out the important role that gravity played on the Earth. Moon’s gravity makes the tides change in the oceans. Gravity keeps the Earth’s atmosphere from flying o ff into space. The atmosphere is what gives us weather. Without it, the Earth would have no weather at all. Gravity also keeps us from flying off into space. It also makes the Earth go round the Sun. And it keeps the Moon going around the Earth. O f course, the Earth never touches the moon.
93 . What is the main idea o f the text?
A) The Isaac Newton’s prediction of weather change
B) The apple which falls from a tree in the garden
C) The notion o f gravity and its importance
D) The force which pulls things up to the sky
94 . According to the passage, what do we call the force that pulls things to the ground?
A) gravity B) the Earth
C) the Moon D) space
95. According to the passage, you can tell that ... .
A) gravity deals only with apples in the garden
B) gravity makes the Earth touch the moon
C) gravity has nothing to do with the weather
D) gravity is important to the weather
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