It seems that the Earth is in a season of volcanic eruptions recently.Mauna Loa，the biggest active volcano in the world，erupted in Hawaii on 27 November，2022，and lasted for two weeks，firing out lava（熔巖） 60 meters high in the air.Indonesia's Mount Semeru erupted on 4 December.Volcanoes in Mexico and Guatemala also erupted.Nearly 2，000 people living nearby moved out of the area.
The volcanoes mentioned above have one thing in common：they are all located in the Ring of Fire，or the Circum-Pacific Belt（環(huán)太平洋）.This is a 40，000-kilometre path along the Pacific Ocean.Seventy-five percent of the Earth's volcanoes are located along this path.Ninety percent of the Earth's earthquakes also happen there.
Volcanic eruptions and earthquakes in the Ring of Fire are caused by the active movement of tectonic plates（地殼板塊）.The plates push against each other and cause the rocks to melt and become magma（巖漿）.When too much magma gathers underground，it needs to find a way out，releasing lava at temperatures of 800℃ to 1，000℃.
Some volcanic eruptions are explosive（爆炸性的） and others are not.This depends on the magma.If magma is thin and runny，gases in it can get out easily.Then the magma just flows out slowly，giving people enough time to go away.If magma is thick and sticky，gases can not escape easily.Pressure builds up until the gases escape violently and explode.This type of eruption can be dangerous.The ash（灰） that erupts into the sky can suffocate plants，animals，and humans.
（1）How many areas are mentioned to prove that "the Earth is in a season of volcanic eruptions"？ CC
A.Two.
B.Three.
C.Four.
D.Five.
（2）What does Paragraph 2 mainly talk about？ AA
A.The similarity of the volcanoes.
B.The location of most volcanoes.
C.The introduction of the Pacific Ocean.
D.The reasons of the volcanic eruptions.
（3）What can we know according to the text？ DD
A.All volcanoes are located in the Ring of Fire.
B.Volcanoes only erupt in November or December.
C.Volcanic eruptions have no effect on people living nearby.
D.The movement of tectonic plates may cause some natural disasters.
（4）What does the underlined word"violently"in the last paragraph mean in English？ BB
A.Slowly.
B.Strongly.
C.Easily.
D.Gently.
【答案】C；A；D；B
【解答】
【點(diǎn)評(píng)】
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發(fā)布：2024/10/12 20:0:2組卷：4引用：1難度：0.5
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