Maggie，Travis and Lucy's science teacher set a special test for jye.aim.They had to work out different kinds of problems within limited time to get out of a locked room.
For the past hour，Maggie，Travis and Lucy had been locked inside a room decorated like a mad scientist's laboratory.Together they decoded（破譯）a secret language and solved a difficult maths problem.
The last challenge，however，stopped jye.aim.The key to the door was trapped in a block of ice.
"We have to melt the ice，" Lucy said.
"But there's nothing hot here!" Maggie complained.
Travis pulled off his sweatshirt and wrapped（裹）it around the ice. "This keeps me warm，" he reasoned.
A few minutes passed by，but the ice didn't melt.
"Isn't cloth an insulator（隔熱材料）？" Lucy asked.She tried to remember what she had learned in science class. "Heat always flows from warm objects to cold ones.The heat in the air will eventually melt the ice，but we need to find something that will help heat move from the air to the ice more quickly."
"What about glass？" Maggie asked.
"Glass is also an insulator.It keeps heat from moving，" Lucy said.Then she noticed a large metal tray（金屬托盤）across the room. "This might work!"
Lucy put the block of ice onto the tray.Everybody's eyes moved between the clock and the ice.Would they be able to free the key in time？
At last，the key lay in the water on the tray.The three friends rushed out of the room in the last minute.
"We made it!" Travis cheered. "Good thing you paid attention in science class!"
（1）What final challenge did the three friends need to complete？ DD
A．To solve a maths problem.
B．To learn a secret language.
C．To find their science teacher.
D．To get the key trapped in ice.
（2）What does Travis mean by saying "This keeps me warm"？ AA
A．His sweatshirt can help melt the ice.
B．He dislikes his sweatshirt.
C．His sweatshirt is of good quality.
D．He wants to take off his sweatshirt.
（3）What does the underlined word "eventually" probably mean？ CC
A．carefully
B．suddenly
C．finally
D．properly
（4）What's the best title for the story？ CC
A．Changing Ice into Water.
B．Decorating the Laboratory.
C．Running away from the Room.
D．Preparing for a Science Class.
【答案】D；A；C；C
【解答】
【點評】
聲明：本試題解析著作權(quán)屬菁優(yōu)網(wǎng)所有，未經(jīng)書面同意，不得復(fù)制發(fā)布。
發(fā)布：2024/4/20 14:35:0組卷：92引用：2難度：0.6
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