Four hundred and three babies are crying loudly. Do you know how to make them quiet in 41 seconds? There is an amazing new product on sale in Japan which does exactly this. It is an LP (a long-playing record) of sounds from inside a mother's body, which a hospital doctor recorded. In tests with the record she played the LP to 403 crying babies. After 41 seconds none of the babies was crying and 161 of them were sleeping.
The record began as an experiment by Professor Hajime Minooka of the Nippon Medical University near Tokyo. He was looking for something natural that helps new-born babies go to sleep. The sound of the mother's heart-beat and other body sounds are the things the babies heard inside their mothers. They feel safe and happy when they hear these sounds again. And they go to sleep.
Hospitals in Osaka and Tokyo are using the LP. 10,000 young couples are using it too. Toshiba Music Company who make and sell the records are very happy. One and a half million couples（夫妇) marry every year in Japan. Many will have babies, so the LP will definitely（明确的、干脆地) be a hit!
1.The experiment was made on ___ babies.
A. 10,000 B. 564 C. 403 D. 161
2. What is TRUE according to the text?
A. About 55% of the crying babies fall asleep after 41 seconds hearing the LP.
B. The LP sounds were first recorded by Professor Hajime Minooka.
C. The LP is produced and sold by Toshiba Music Company.
D. One million and a half babies are born in Japan every year.
3. Babies feel ___ when they hear these LP sounds.
A. the sounds be their mothers' voices
B. as if they were inside their mothers
C. the music natural and soft
D. themselves sleeping together with their mothers
4 "Many will have babies, so the LP will definitely be a hit!" The word "hit" means"____".
A. popularity B. amazement C. strike D. experiment