The teacher in the classroom will have other electronic tools. The tape machines will run pre-recorded lessons which pupils will follow by headphones. The lessons will be specially offered to the students’ levels of ability. For example, while the class as a whole studies history, each student will receive an individual history lesson, directed to his particular level of ability.

Should questions appear, the students will be able to talk directly to the teacher on individual “intercom” (内线交流) without interrupting the rest of the class. In this way, the teacher will be able to conduct as many as three classes at the same time.

44．Closed-circuit television will probably carry lessons to .

A．a single classroom in the world

B．all the classrooms in the world

C．a single classroom in a city or a country

D．all the classrooms in a city or a country

45．After the televised lesson,______.

A．the students will go to their next class

B．the classroom teachers lose their jobs

C．the students will stay at home and learn

D．the classroom teacher will take over

46．In the schools of tomorrow, the students will .

A．contain electronic equipment

B．actually be a television set

C．no longer exist

D．look like a lonely table

47．In the schools of tomorrow, the teachers will .

A．all study different subjects at the same time

B．study at different levels within a subject at the same time

C．not allowed to study at the same level within a subject

D．not have to read books, but watch television only

48．Electronic tools will make the teacher .

A．teach more than one class at the same time

B．teach many different subjects at the same time

C．teach as many students as he or she wishes

D．depend on television stations

D

Break a mirror. Walk under a ladder. Notice that it’s Friday the thirteenth. What do you feel? Are you a little afraid? In all three cases, you may half believe that you are going to have bad luck. Such superstitions are usually very old. Often they have changed over time. Take “knocking on wood.” We do it for good luck. People long ago believed that trees were the homes of gods. So it was good luck to touch a tree. Who knows when “touching a tree” became “knocking on wood”?

Superstitions also change from place to place. The Dutch knock on wood for good luck. But it can’t be painted wood. So they knock on the bottom of a table.

Look at the supersition about spilling the salt. Spilling salt brings bad luck. To stop the bad luck, throw some salt over your left shoulder. The ancient Greeks believed that. So do some people today. But some Irish think you must throw the salt over your right shoulder. Or you must throw the salt over your left shoulder. Or you must throw some in the fire. If you don’t, you will have an argument. And spilling the salt will cause a fight. This is an old Jewish superstition.

In Denmark, spilling wet salt is bad luck. But spilling dry salt is good luck.

In some parts of England, you must not pass the salt to another person. You set it on the table. The other person picks it up. This is probably to keep you from spilling the salt and bringing bad luck.