单选题The ______ of blood always makes him sick.

单选题— When will you be back? — I'll be back ______ a couple of days. A. after B. for C. about D. in

单选题The weather forecast says it is going to clear ______ soon. A. up B. out C. over D. about

单选题To be frank, ______ is a great relief to have the task fulfilled in so short a time.

单选题How can you expect her to _____ exactly what happened fifteen years ago?

单选题It is ______for a person in his position to make such a mistake. A. rare B. less C. little D. few

单选题W: Look at this pink watch. It looks great, doesn"t it? And it"s only $20. M: ______

单选题Human beings have always had an ability to attend to several things at once. Nor is electronic multitasking entirely new: we"ve been driving while listening to car radios since they became popular in the 1930s. But there is no doubt that multitasking has reached a kind of warp speed in the era of Web-enabled computers, when it has become routine to conduct several IM(即时通讯) conversations, watch TV and use the computer all at once. But what"s the impact of this media consumption? And how are these multitasking devices changing how kids learn, reason and communicate with one another? Social scientists and educators are just beginning to deal with these questions, but the researchers already have some strong opinions. Although multitasking kids may be better prepared in some ways for today"s fast-paced workplace, many scientists are positively alarmed by the trend. Kids that are instant messaging while doing homework, playing games online and watching TV, aren"t going to do well in the long run. On the positive side, multitasking students tend to be extraordinarily good at finding and using information. And probably because modem childhood centers around visual (视觉的) rather than print media, they are especially skilled at analyzing visual data and images. Many educators and psychologists say parents need to actively ensure that their teenagers break free of uncontrollable engagement with screens and spend time in the physical company of human beings--a growing challenge not just because technology offers such a handy option but because so many kids lead highly scheduled lives that leave little time for old-fashioned socializing and family meals. Indeed, many teenagers and college students say overcommitted (任务过重的) schedules drive much of their multitasking. Just as important is for parents and educators to teach kids that it"s valuable, even essential, to occasionally slow down, unplug and take time to enjoy life beyond the screen.

单选题______ what to do, he went to the old man for help.

单选题When she does something, Mrs. Brown feels that her little child is always ______.

单选题With the sun (setting), we stopped (working), (putting) away our tools and were (going) to go home.

单选题Scarcely had he gone out ______ .

单选题Some people seem to let their kids do ______ they like.

单选题The other day your cousin came to visit us without giving notice ______.A. in addition B. in advance C. in fact D. in nature

单选题It was hard for him to learn English in a family, in which ______ of the parents spoke the language. A. none B. neither C. both D. each

单选题It is because he is kind and modest ______ he wins the respect of others.

单选题After he retired from office, Rogers ______ painting for a while, but soon lost interest.

单选题The book seems to have been ______ from various books and articles.

单选题The music would stop at the intervals, then ______ after a while. A. restore B. recover C. resume D. reform