六级However, the "screen time" hypothesis, advanced by researchers such as Jean Twenge, is that electronic devices and excessive time spent online may have reversed these trends in recent years, causing problems for young people's psychological health.
高考Scientists have advanced many theories about why human beings cry tears, none of which has been proved.
六级It is essential to advanced manufacturing.
六级But efforts are in place to expose more black, Hispanic, and low-income students to advanced math, in the hope that the demographic pool of high-level contenders will eventually begin to shift and become less exclusive.
四级Useful thinking skills for advanced academic research.
六级Andrew Hacker, Queens College political science professor, thinks that advanced algebra and other higher-level math should be cut from curricula in favor of courses with more routine usefulness, like statistics.
六级As sisters and brothers advanced into old age, closeness increases and rivalry diminishes, explains VC, a psychologist at Purdue University.
高考In advanced concepts and even philosophy—and they will soon discover that toknow feels more like a club than just a magazine.
高考Advanced lights, motors, and building designs have helped save a lot of energy and therefore prevented pollution.
高考Since then, I have taken courses like data science and advanced mathematics.
四级Instead he was keenly interested in product design and aesthetics （美学）, and in making advanced technology simple to use.
六级In a division of electronic engineers, who were designing equipments so advanced that they work in teams of up to 150, co-workers and managers were asked to nominate the standouts- the stars in productivity and effectiveness
六级The summer after 7th grade, students spend three weeks on a college campus studying advanced math for seven hours a day.
考研Earlier this year the country's Defense Advanced Research Projects Agency announced plans to pay Boeing to investigate formation flighty though the programme has yet to begin.
今年早些时候，美国国防部高级研究计划局（Defense Advanced Research Projects Agency）宣布计划向波音公司支付调查编队飞行的费用，尽管该计划尚未开始。
六级Knowledge based degrees are still important, but employers are demanding advanced thinking skills from college graduates.
六级More students have Advanced Placement credits
高考It's not all that hard to build an advanced and large vocabulary.
考研Specific brain regions that respond during direct gaze are being explored by other researches, using advanced methods of brain scanning.
六级Unlike developed cities, however, these areas lack advanced water-treatment facilities, and rivers effectively become sewers.
六级There are three dozen universities in the UK which are actively engaged in advanced research training and commercialisation work.
高考The competition has two levels, the beginners and the advanced.
六级One of five students arrives at college today with Advanced Placement (AP) credits amounting to a semester or more of college level work.
六级The U.S. is also the only advanced economy that does not guarantee workers paid vacation time, and it's one of only two countries in the world that does not offer guaranteed paid maternity leave.
高考The first prize is 300 dollars for the beginners and 750 dollars for the advanced.
考研He argued that human evolution was characterized by a struggle he called the "survival of the fittest", in which weaker races and societies must eventually be replaced by stronger, more advanced races and societies.
六级According to the college, the plan is designed for high-ability, highly motivated student who wish to save money or to move along more rapidly toward advanced degrees.
考研It doesn't then necessarily follow that one kind of reading is fuller, more advanced or more worthwhile than another.
四级since fewer than half of Americans say they cook at an intermediate level and only 20% describe their cooking skills as advanced, the crisis is one of confidence.
六级The equipment in American studios was more advanced than anything in Britain, which had led the Beatles' great rivals, the Rolling Stones, to make their latest album, "Aftermath", in Los Angeles.
六级Of course, much of this argument in the 1930s-40s was advanced because there was little or no experience in justifying apparel on the basis of utility.
四级Asian-American students have been eager participants in a state program that permits them to take summer classes off campus for high school credit, allowing them to maximize the number of honors and Advanced Placement classes they can take, another practi
四级girls studying in a single-sex setting also earn higher scores on their College Board and advanced placement exams than girls who study in coeducational settings.
六级Director of the Advanced Tissue Biofabrication Center in the Department of Regenerative Medicine and Cell Biology at the medical university, Mironov now primarily conducts research on tissue engineering, or growing, of human organs.
四级The virtual assistant became so advanced and realistic that the students didn't know she was a computer.
高考Thanks to the advanced technology, we live in an age of bettered communication.
六级I diligently attended my SAT, ACT, and Advanced Placement test preparation courses.
六级Only two countries in the advanced world provide no guarantee for paid leave from work to care for a newborn child.
考研This increasingly high level of education is probably a necessary, but not a sufficient, condition for the complex political systems required by advanced economic performance.
六级"middle school is an important age because students have enough math capability to solve advanced problems, but they haven't really decided what they want to do with their lives," said Loh.
六级In these groups, which came out of an Eastern European tradition of developing young talent, professors teach promising K-12 students advanced mathematics for several hours after school or on weekends.
四级They have been huge supporters of the district's advanced mathematics program, which once began in the fourth grade but will now start in the sixth.