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B
Mr Allen held out a glass of water with three ice cubes in it. “Why do things float?” he asked the class.
No one said a word. The whole class was silent.
“Any guesses?”
The students stayed quiet. A few of them looked at each other.
“What’s the first thing that comes to your mind? Remember, there are no right or wrong answers.” Mr Allen did his best to keep his smile warm and inviting.
Still, no one in the class spoke up.
“Okay,” Mr Allen finally said. “How about this—who can give me the worst answer you can think of?”
“The worst answer?” asked Miguel from the back of the room.
“That’s right,” Mr Allen nodded.
“Ooh!” shouted Martika. “I’ve got it! Things float because ... they have wings!”
Alex laughed and said, “If they had wings, they’d be flying, not floating.”
Martika rolled her eyes at him, “It’s supposed to be a bad answer. What’s your bad answer?”
“Uhh ... well ...” Alex’s face turned red. “Magic?”
“That’s a good one!” said Mr Allen quickly.
“Sometimes science seems like magic until we find out what’s going on.”
“Well, I think clouds float in the sky so we can lie on the grass and look at cloud animals,” laughed Cassie. “I always see three-headed elephants!”
“I like looking at clouds too,” Mr Allen said, picking up the glass of water. “Clouds are made of lots of little water drops.”
“Ice is made of water particles (微粒) too,” Miguel said in an excited voice. “I remember when you taught us about that.”
“Right,” said Mr Allen. “But what’s the difference between ice and the water it’s floating in?”
“Ice is a solid (固体), while water is a liquid (液体), right?” Martika suggested.
“Exactly!” Mr Allen shouted.
Ella piped up, “Isn’t that because the water particles in ice are more spread apart than those in liquid water?”
“They are less dense (密集的),” added Tyler.
“Which makes them float!” interrupted Cassie.
“Good answers, class!” Mr Allen smiled.
(
A. Happy. B. Surprised. C. Relaxed. D. Bored.
(
A. The students didn’t respect Mr Allen at all.
B. The students weren’t interested in Mr Allen’s class.
C. Mr Allen was a teacher full of experience and patience.
D. Mr Allen felt unhappy with the students’ answers in class.
(
A. A magical glass B. An interesting question
C. A good bad answer D. An extremely quiet class
Mr Allen held out a glass of water with three ice cubes in it. “Why do things float?” he asked the class.
No one said a word. The whole class was silent.
“Any guesses?”
The students stayed quiet. A few of them looked at each other.
“What’s the first thing that comes to your mind? Remember, there are no right or wrong answers.” Mr Allen did his best to keep his smile warm and inviting.
Still, no one in the class spoke up.
“Okay,” Mr Allen finally said. “How about this—who can give me the worst answer you can think of?”
“The worst answer?” asked Miguel from the back of the room.
“That’s right,” Mr Allen nodded.
“Ooh!” shouted Martika. “I’ve got it! Things float because ... they have wings!”
Alex laughed and said, “If they had wings, they’d be flying, not floating.”
Martika rolled her eyes at him, “It’s supposed to be a bad answer. What’s your bad answer?”
“Uhh ... well ...” Alex’s face turned red. “Magic?”
“That’s a good one!” said Mr Allen quickly.
“Sometimes science seems like magic until we find out what’s going on.”
“Well, I think clouds float in the sky so we can lie on the grass and look at cloud animals,” laughed Cassie. “I always see three-headed elephants!”
“I like looking at clouds too,” Mr Allen said, picking up the glass of water. “Clouds are made of lots of little water drops.”
“Ice is made of water particles (微粒) too,” Miguel said in an excited voice. “I remember when you taught us about that.”
“Right,” said Mr Allen. “But what’s the difference between ice and the water it’s floating in?”
“Ice is a solid (固体), while water is a liquid (液体), right?” Martika suggested.
“Exactly!” Mr Allen shouted.
Ella piped up, “Isn’t that because the water particles in ice are more spread apart than those in liquid water?”
“They are less dense (密集的),” added Tyler.
“Which makes them float!” interrupted Cassie.
“Good answers, class!” Mr Allen smiled.
(
B
) 29. How did the students feel when Mr Allen asked for the worst answer?A. Happy. B. Surprised. C. Relaxed. D. Bored.
(
C
) 30. What can we infer from the passage?A. The students didn’t respect Mr Allen at all.
B. The students weren’t interested in Mr Allen’s class.
C. Mr Allen was a teacher full of experience and patience.
D. Mr Allen felt unhappy with the students’ answers in class.
(
C
) 31. What’s the best title of the passage?A. A magical glass B. An interesting question
C. A good bad answer D. An extremely quiet class
答案
29. B 30. C 31. C
