单选题"None of them need do any work today, ______ they?" "Yes, all of them ______.

单选题The central plan, ______ by the government, shows the amount of each goods produced by the various firms and shared among different households for consumption.

单选题 According to a study conducted last April, female seniors studying at Boston College left the university with lower self-confidence than when they entered as freshmen. The study, administered by the Office of Institutional Research, Planning and Assessment at Boston College, examined two surveys: the first of which was taken by students during their freshman year, and the second of which was taken by students exiting their senior year. Despite reports of high academic achievement, most female students gave themselves weaker self evaluations in the second survey. Abbey Clark, a senior and founder of the Boston College chapter (分会) of I AM THAT GIRL, a female-empowerment (赋权) community, says the finding is 'startling'. Clark hopes to change the trend by creating an open community that will ignite (点燃) confidence and empowerment in young women. I AM THAT GIRL, a global community which aims to help girls turn their self-doubt into self-love, is all about celebrating women's unique selves, Clark says. 'I AM THAT GIRL helps girls turn their stories of struggle and adversity (逆境) into stories of connectedness and empowerment and feeling good about themselves,' Clark says. 'I think that all high school girls at one time or another can relate to the feeling of not being good enough.' To help young girls overcome these feelings, Clark says I AM THAT GIRL at Boston College, which boasts 100 members in its first registered year on campus, holds weekly meetings offering a 'safe space' for college students in which they can discuss topics like body image, relationships, family dynamics and finding one's passions. Maria Pascucci, the founder of Campus Calm, a national organization that aims to help college women lead healthy, happy lives, says females feel the pressure to be perfect on a regular basis. She added that the media sends mixed messages to young girls, advising them to be the best they can be while simultaneously persuading them to buy more and strive for more. 'In our society, being a perfectionist is a glorified and socially acceptable form of self-abuse,' Pascucci says. Pascucci, who was teased as a young girl and suffered self-esteem issues, says her main message to young girls is to let them know their sense of worth comes from within. 'When we begin to compare ourselves to others, especially when we're vulnerable, that can do a lot of damage to our self-esteem,' she says. Clark echoes Pascucci's point, saying it's important to let young girls know that their physical appearance is only 'one slice of the pie'. 'Girls have a lot to bring to the table,' Clark says, 'and that's looking past physical beauty and just celebrating something unique within yourself that isn't so apparent.'

单选题She ______ the list of names to see if hers was on it.

单选题I took ______ of the opportunity to tell him what I thought.

单选题The weekly market sells mainly fruit, vegetables and diary ______. A. production B. output C. manufacture D. produce

单选题The ship's generator broke down, and the pumps had to be operated ______ instead of mechanically.

单选题He is too weak to ______ the heavy box.

单选题On my journey by car across the European Continent, I enjoyed looking at the______of the various countries.

单选题 Questions6-9 are based on the conversation you have just heard.

单选题He became aware that he had lost his audience since he had not been able to talk ______ around one topic.

单选题Nancy: Have you heard about Dana? She is going to get married with Graham. Scott: ______

单选题You ______ drive carefully. The roads are wet.

单选题I was too ______ to ask him for help.

单选题We promise_______attends the party a chance to have a photo taken with the movie star. 

单选题The customs officer asked me if I had anything to ______

单选题 Teenagers at risk of depression, anxiety and suicide often wear their troubles like a neon (霓虹灯) sign. Their risky behaviors—drinking too much alcohol, using illegal drugs, smoking cigarettes and skipping school—can alert parents and teachers that serious problems are brewing. But a new study finds that there's another group of adolescents who are in nearly as much danger of experiencing the same psychiatric symptoms: teens who use tons of media, don't get enough sleep and have a sedentary (不爱活动的) lifestyle. Of course, that may sound like a description of every teenager on the planet. But the study warns that it is teenagers who engage in all three of these practices in the extreme who are truly in jeopardy. Because their behaviors are not usually seen as a red flag, these young people have been dubbed the 'invisible risk' group by the study's authors. 'In some ways they're at greater risk of falling through the cracks,' says researcher Vladimir Carli. 'While most parents, teachers and clinicians would react to an adolescent using drugs or getting drunk, they may easily overlook teenagers who are engaging in inconspicuous behaviors.' The study's authors surveyed 12,395 students and analyzed nine risk behaviors, including excessive alcohol use, illegal drug use, heavy smoking, high media use and truancy (逃学). Their aim was to determine the relationship between these risk behaviors and mental health issues in teenagers. About 58% of the students demonstrated none or few of the risk behaviors. Some 13% scored high on all nine of the risk behaviors. And 29%, the 'invisible risk' group, scored high on three in particular.. They spent five hours a day or more on electronic devices. They slept six hours a night or less. And they neglected 'other healthy activities.' The group that scored high on all nine of the risk behaviors was most likely to show symptoms of depression; in all, nearly 15% of this group reported being depressed, compared with just 4% of the low-risk group. But the invisible group wasn't far behind the high-risk set, with more than 13% of them exhibiting depression. The findings caught Carli off guard. 'We were very surprised,' he says. 'The high-risk group and low-risk group are obvious. But this third group was not only unexpected, it was so distinct and so large—nearly one third of our sample—that it became a key finding of the study.' Carli says that one of the most significant things about his study is that it provides new early-warning signs for parents, teachers and mental health-care providers. And early identification, support and treatment for mental health issues, he says, are the best ways to keep them from turning into full-blown disorders.

单选题They are considering ________ as the prices may go up.

单选题It's high time ( ) about the traffic problem.

单选题选出下面读音不同的选项（）。