Complete the summary below. Choose NO MORE THAN TWO WORDS from the passage for each answer. Write your answers in boxes 22-26 on

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问题 Complete the summary below.
Choose NO MORE THAN TWO WORDS from the passage for each answer.
Write your answers in boxes 22-26 on your answer sheet.
Volcanic eruptions have shaped the earth’s land surface. They may also have produced the world’s atmosphere and【R22】______Eruptions occur when molten rocks from the earth’s mantle rise and expand. When they become liquid, they move more quickly through cracks in the surface. There are different types of eruption. Sometimes the【R23】______moves slowly and forms outcrops of granite on the earth’s surface. When it moves more quickly it may flow out in thick horizontal sheets. Examples of this type of eruption can be found in Northern Ireland, Wales, South Africa and【R24】______A third type of eruption occurs when the lava emerges very quickly and【R25】______violently. This happens because the magma moves so suddenly that【R26】______are emitted.
【R23】

选项

答案lava / magma / molten rock

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