语法与词汇Many ice researchers believe that the melting Greenland，if it continues，will add at least three feet to global sea levels by 2100
语法与词汇There is only one difference between a young man and an old one: the young man has a glorious future before him and the old one has a splendid future behind him, and maybe that is where the difference lies
语法与词汇Many periods happened in history when remarkable progress was made within a relatively short span of time
语法与词汇A young man sees a sunset and, unable to understand or to express the emotion that it rouses in him， concludes that it must be the gateway to a world that lies beyond
语法与词汇Radar is used to extend the competence of manssenses for observing his environment, especially the sense of vision
语法与词汇She________ through the pages of a magazine，not really concentrating on them
语法与词汇He is lucky because he has a fastidious girlfriend who always keeps the closets and the house sparklingly clean
语法与词汇According to the latest survey, the majority of people who keep________ to New Scientist are mainly young men who are ready to keep abreast of advances in science and technology
语法与词汇The office, laboratory, and museum are situated at the top of the hill in which they command a fine view
语法与词汇The accounting firm deliberately destroyed documents to ________government investigators
语法与词汇Linguistic research often requires a period of fieldwork where the linguist can study and record the spoken dialects of a region
语法与词汇He has spent a lot of time to help________ accurate information about the issue to local teachers
语法与词汇An education blog that asked readers to send reports of violence in schools tied to the election has been inundated with more than 375 reports
语法与词汇Falsification of data can be a retrogressive and corrupt activity that is serious and dangerous for any company, institute or government
语法与词汇Although salmon may travel hundreds of miles from where they were spawned, they will ultimately return there to lay eggs
语法与词汇Because excessively hunting has depleted many wild life species, preservation zones for wild animals are being established in some provinces
语法与词汇When ancient artifacts have been________ to these processes, their origin is usually impossible to trace
语法与词汇Its success was instantaneous, though neither the host nor Mr
语法与词汇Chimpanzee society is male-dominated and features strong bonds between adult males and________ ties between females
语法与词汇Printmaking is the generic term for a number of processes, of which woodcut and engraving are two________examples