Passage Two
Only moments after announcing a policy of zero tolerance on cellphone use in the classroom, Ali Nazemi heard a ring. Nazemi, a business professor at Roanoke College in Virginia, took out a hammer and walked towards a young man. He smashed the offending device. Students’ faces turned white all over the classroom.
This episode reflects a growing challenge for American college teachers in, as the New York Times puts it, a "New Class (room) War: Teacher vs. Technology". Fortunately, the smashed-phone incident had been planned ahead of time to demonstrate teachers’ anger at inattentive students distracted by high-tech gadgets.
At age 55, Nazemi stands on the far shore of a new sort of generational divide between teacher and student. The divide separates those who want to use technology to grow smarter from those who want to use it to get dumber. Perhaps there’s a nicer way to put it. "The
A. students in his class didn’t listen to his announcement
B. he hated new gadgets such as cellphones
C. he no longer tolerated cellphone use in the classroom
D. he wanted to show how distractive the cellphone was
The first automobile was invented more than two hundred years ago. It used steam for power and had wooden wheels. The first automobile may have been simple and primitive, but it was an extremely important invention. The automobile today is the primary means of land transportation. It has produced more changes in our daily life than any other machines.
Almost all gasoline engines work in the same way—with four movements, or strokes, of a piston in a cylinder. The first stroke pulls the fuel mixture (gasoline and air) into the cylinder. The second stroke compresses the fuel mixture. A spark plug produces a spark that ignites the fuel mixture and causes the third stroke. The final stroke removes any waste gases which might remain in the cylinder.
The preceding paragraph explains what happens inside the cylinder to make the piston move. When the piston is pushed down by the explosion in the third stroke, it pushes the connecting rod. This rod rotates the cranksh
A. Automobiles
B. How a Car Works
C. The First Car
D. Cars and Roads
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