Many teachers believe that the responsibilities for learning lie with the student. {#blank#}1{#/blank#} a long reading assignment is given, instructors expect students to be familiar with {#blank#}2{#/blank#} (inform) in the reading even if they do not discuss it in class or take an examination. The ideal student is considered to be one who is motivated to learn for the sake of learning, not the one interested only in getting high grades. Sometimes homework is returned {#blank#}3{#/blank#} brief written comments but without a grade. Even if a grade is not given, the student is {#blank#}4{#/blank#} (responsibility) for learning the material assigned. When research {#blank#}5{#/blank#} (assign), the professor expects the student to take it actively and to complete it with minimum guidance. It is the student's responsibility to find books, magazines, and articles in the library. Professors do not have the time to explain {#blank#}6{#/blank#} a university library works; they expect students, {#blank#}7{#/blank#} (especial) graduate students, to be able to exhaust the reference origins in the library. Professors will help students who need it, but prefer that their students should not be too dependent on them. In the United States, professors have many other duties {#blank#}8{#/blank#} teaching, such as administrative or research work. Therefore, the time {#blank#}9{#/blank#} a professor can spend with a student outside of class {#blank#}10{#/blank#} (limit). If a student has problems with classroom work, the student should either approach a professor during office hours or make an appointment.

    Pollution takes away all the beauty of the beaches of Hawaii. I hate to go to the beaches on {#blank#}1{#/blank#}(sun) weekends and see rubbish bags{#blank#}2{#/blank#}(lie) on the sand, cigarette butts(烟头）{#blank#}3{#/blank#}(bury) in the sand, and soda cans floating in the ocean.

    One thing that really annoys me is that I see tourists who visit Hawaii leave their rubbish on the beaches. I was always taught after drinking soda to throw the can into the place {#blank#}4{#/blank#}it should stay at --the trash can. Another thing that annoys me is that some people walk right by rubbish {#blank#}5{#/blank#}pretend that it's not there.

    The dogs or the fish are not to blame for it. It's our fault and we must blame {#blank#}6{#/blank#}(we).Everyone has to do his or her part{#blank#}7{#/blank#} (solve) this problem. It can't be difficult to do the job. There are a lot of things that we can do. First of all, we can help pick {#blank#}8{#/blank#}rubbish along the beaches. We could also form organizations that help clean up our beaches, More{#blank#}9{#/blank#}(important),we need to start now before the beaches{#blank#}10{#/blank#}(damage) beyond repair.

    Wang Kun and Wang Wei are brother and sister. They have dreamed of {#blank#}1{#/blank#}(take) a great bike trip. It {#blank#}2{#/blank#}(be) Wang Wei who first had the idea to cycle along the Mekong River. They rode bicycles to travel along the Mekong River,{#blank#}3{#/blank#}source is in Qinghai Province. When it{#blank#}4{#/blank#}(enter) Southeast Asia, it travels {#blank#}5{#/blank#}(slow) through hills and low valleys and the plains{#blank#}6{#/blank#}rice grows. Despite the difficulties, Wang Kun and Wang Wei {#blank#}7{#/blank#}(determine) to begin their journey at {#blank#}8{#/blank#}altitude of more than 5,000 meters in Qinghai Province. During their journey, they enjoyed the continuous change of the weather. Finally, they reached Dali in Yunnan Province,{#blank#}9{#/blank#}which Dao Wei and Yu Hang joined them. The four of them went on with {#blank#}10{#/blank#}(they) great bike trip.

    Roofs and windows of buildings aren't the only surfaces that can be used to produce solar power. In China,{#blank#}1{#/blank#}（construct）has begun of the country's first solar highway, in which solar panels are placed underneath transparent concrete.

    The solar highway is a 2 km stretch（一段）of road{#blank#}2{#/blank#}（lie）on the Jinan City Expressway, and it's divided into three layers. The see-through concrete protects a set of solar panels of two{#blank#}3{#/blank#}（size）. Beneath the solar panels{#blank#}4{#/blank#}（be）a layer that separates them from the damp ground.

    The road{#blank#}5{#/blank#}（it）has already been completed, and now it's only a matter of connecting the grid（输电网）,{#blank#}6{#/blank#}is expected to be finished by the end of the year alongside the completion of the Jinan Expressway's south section.

    This isn't the first solar road China has worked on. Earlier this year, the Qilu Transportation Development Group, also handling the Jinan Expressway solar road,{#blank#}7{#/blank#}（build）a 160-meter- long solar road in{#blank#}8{#/blank#}city of Jinan. It has the ability of heating up to keep the highway clear{#blank#}9{#/blank#}snow and ice* and is able to{#blank#}10{#/blank#}（wireless） charge electric vehicles. The new solar highway is expected to one day be equipped with the same features.

    Mr.Johnson lived in the woods with his wife and children. He owned {#blank#}1{#/blank#} farm, which looked almost abandoned. {#blank#}2{#/blank#} (lucky), he also had a cow which produced milk every day. He sold or exchanged some of the milk in the towns nearby {#blank#}3{#/blank#} other food and made cheese and butter for the family with what {#blank#}4{#/blank#} (leave).The cow was their only means of support, in fact. One day, the cow was eating grass {#blank#}5{#/blank#} it began to rain heavily. While making great efforts to run away, she {#blank#}6{#/blank#} (fall) over the hill and died. Then the Johnsons had to make a living {#blank#}7{#/blank#} the cow. In order to support his family, Mr. Johnson began to plant herbs and vegetables. Since the plants took a while to grow, he started cutting down trees {#blank#}8{#/blank#} (sell) the wood. Thinking about his children's clothes, he started growing cotton too. When harvest came around, he was already selling herbs, vegetables and cotton in the market{#blank#}9{#/blank#} people from the towns met regularly. Now it occurred to {#blank#}10{#/blank#} that his farm had much potential and that the death of the cow was a bit of luck.

There is one famous poem in Tang poetry, which reads: "I left home when a mere young man, and returned in old age. My native accents {#blank#}1{#/blank#}(remain) unchanged, but my ear - lock had grown thin". This poem {#blank#}2{#/blank#}(apparent) shows language is not only a tool for communication, but also the indicator of people's cultural identity. In a linguistic(语言学的)sense, dialect refers to the variety of a specific language {#blank#}3{#/blank#}( cause) by different geographical, social and cultural contexts.

Owing {#blank#}4{#/blank#}the vast areas and large population of China, diverse dialects can {#blank#}5{#/blank#}(find) in this great land, such as the Wu dialect in Shanghai, Hakka and Cantonese. However, it cannot be denied that since the popularization of Putonghua in China, the importance of dialects is lowering among Chinese people. To make matters {#blank#}6{#/blank#}(bad), some dialects have even disappeared due to the adoption of Putonghua {#blank#}7{#/blank#} is required in public places like schools and companies. {#blank#}8{#/blank#}(consider) the cultural significance of dialects, nowadays both Chinese {#blank#}9{#/blank#}(official) and common people are paying careful attention to {#blank#}10{#/blank#} preservation of dialects because it's the treasure of Chinese culture and art.