阅读下列短文，从每小题所给的四个选项（A、B、C和D）中，选出最佳选项。
If you ask some people: "How did you learn English so well?" you may get a surprising answer: "In my
sleep!"
These are people who have taken part in one of the recent experiments to test learn-while-you-sleep
methods, which are now being tried in several countries, and with several subjects, of which English is only
one.
Specialists say that this sleep-study method speeds language learning greatly. They say that the average
(平均) person can learn two or three times as much during sleep as in the same period during the day — and
this does not affect his rest in any way. A word of warning, however, sleep-teaching will only force your head
to learn what you have studied already while you are awake.
In one experiment, ten lessons were broadcast over the radio continually for two weeks. Each lesson
lasted twelve hours — from 8 p.m. to 8 a.m. . The first three hours of English grammar and vocabulary were
given with the student awake. At 11 p.m. a sleep song was broadcast to send the student to sleep and for the
next three hours the radio whispered the lesson again into his sleeping ears. At 2 a.m. a sharp noise was sent
over the radio to wake the sleeping student up for a few minutes to review the lesson. Then soft songs went
him back to rest again while the radio went on. At 5 o'clock his sleep ended and he had to go through the lesson
again for three hours before breakfast.
1. The learn-while-you-sleep method
than other learning methods.
[ ]
A. can get better result
B. is more acceptable
C. is more tiring
D. is harder
2. By this method, one
.
[ ]
A. starts to learn a new lesson in sleep
B. learns how to sleep better
C. is made to review his lessons in sleep
D. can listen to broadcast while in bed
3. In the experiment, lessons were given
.
[ ]
A. in the night-time
B. after soft songs were broadcast
C. while the student was awake
D. all through the twelve hours
4. Before each lesson finishes, the students has to
.
[ ]
A. get up and take breakfast
B. be wakened by a loud noise
C. listen to the lesson again in sleep
D. review the lesson by himself