(1) People often ask which is the most difficult language to learn, and it is not easy to answer because there are many factors to take into consideration. Firstly, in a first language the differences are (66) as people learn their mother tongue naturally, so the question of how hard a language is to learn is only (67 ) when learning a second language. A native speaker of Spanish, (68) , will find Portuguese much easier to learn than a native speaker of Chinese, because Portuguese is very similar to Spanish, (69) Chinese is very different. So first language can (70) learning a second language. The greater the differences between the second language and our first are, the (71) it will be for most people to learn. Many people answer that Chinese is the hardest language to learn, possibly (72) by the thought of learning the Chinese writing system, and the pronunciation of Chinese does appear to be very difficult for many foreign learners. (73) , for Japanese speakers, who already use Chinese characters in their own language, learning (74) will be less difficult than for speakers of languages using the Roman alphabet. Some people seem to learn languages (75) , while others find it very difficult. Teachers and the (76) in which the language is learned also play an important role, as well as each learners motivation for learning. If people learn a language because they need to use it (77) , they often learn it faster than people studying a language that has no direct use in their day to day life.Difference cultures and (78) from those cultures will find different languages more difficult. No language is easy to learn well, (79) languages which are related to our first language are easier. Learning a completely different writing system is a huge (80) , but that does not necessarily make a language more difficult than another.66. A. apparentB. extensiveC. declineD. unimportant 67. A. relevantB. permanentC. essentialD. progressive68. A. by contrastB. in additionC. for exampleD. after all 69. A. whenB. whileC. where D. whether70. A. affectB. achieveC. attachD. assemble71. A. easierB. harderC. fasterD. slower72. A. inherited B. overtaken C. influenced D. restricted 73. A. However B. MoreoverC. ThereforeD. Anyhow74. A. speakingB. listeningC. reading D. writing 75. A. graduallyB. steadilyC. readilyD. subconsciously76. A. learners B. materials C. tutors D. circumstances 77. A. occasionallyB. professionallyC. properlyD. informally78. A. societies B. characters C. individualsD. visitors 79. A. as B. thoughC. becauseD. since 80. A. successB. surpriseC. opportunityD. challengeKeys: DACBABCADC DBCBD (2)Twenty years ago only a very small number of people had the skills or equipment to make fake money. Today computer, copier and printer technology is so _51_ that almost anyone can “make” money. With the new technology there is a new kind of casual faking machine. The number of bills made by casual fakers on their home or office computer is growing fast. In fact, this number has doubled every year since 1989! There is no way to _52_ faking completely. But the government has recently found a few ways to make casual faking very _53_. One way is to put very, very small words, called microprints (微型印刷), in _54_ places on the bill. The words are only 6/1000 inch. No one can read them _55_ a magnifying glass, and they are too small to come out _56_ on a copier. If someone copies a bill that has microprints, the microprinted words on the bill will only be black lines. Another way to stop people from making fake money on their home computer is to use special color-changing ink. Money printed with color-changing ink will look green from one _57_ and yellow from _58_. Home computers cannot use color-changing ink. Copies from a home computer only have normal ink and that can be _59_ quite easily. _60_, money is made on special paper with very small pieces of red and blue silk mixed in. And on each bill there is a special line that _61_ from the top to the bottom of the bill. The blue turns red if you put it under a special _62_. This line and the special paper with red and blue silk are not easy for home computers to _63_. The government must try many different ways to stop faking. It needs to keep _64_ the way money is made because fakers can learn to copy the _65_. Today copiers cant copy microprinted words or color-changing ink. But, in a few years, who knows?51. A. perfectB. advancedC. newD. unthinkable52. A. startB. continueC. stopD. resist53. A. simpleB. reluctantC. difficultD. surprising54. A. hiddenB. obviousC. correctD.