3-Dtechnology(技术)hasalonghistory.It61(make)itsfirstappearancein1838.Andthefirstactual3-DmoviewasLeAriveedTrainwhichwasmadein1903.3-Dtechnology62(base)onthewaythehumanbrainandeyewo

Question

   3-D technology(技术) has a long history. It ____61____(make) its first appearance in 1838. And the first actual 3-D movie was LeAriveed Train which was made in 1903.

   3-D technology ____62____(base) on the way the human brain and eye work. When we look at something our eyes send two pictures to our brain one from the left eye ___63__the other from the right. The small difference ___64___the two pictures makes us see depth.

   To enjoy 3-D movies we have to wear a special pair of glasses. While watching 3-D films we can see different ___65___(picture) in each eye at the same time with the help of 3-D glasses. We feel that we are ___66___(actual) in the same environment as the things we are watching.

   However some people ___67__(be) against watching 3-D films. One reason is that 3-D glasses make the screen look darker. It is bad ___68___people’s eyes. What’s more people __69___ have eye problems may get headaches if they spend too much time____70_____(watch) 3-D movies because their brains need to work harder to “read” pictures.

Answer 1

61. made    62.is based    63. and    64. between   65. pictures  

          66. actually   67. are      68. for     69. who/that  70. watching