单选题When Henry arrived home after a hard day at work, his wife was slept .

单选题Another critical factor that plays a part in susceptibility to colds is age. A study done by the University of Michigan School of Public Health revealed particulars that seem to hold true for the general population. Infants are the most cold-ridden group, averaging more than six colds in their first year. Boys have more colds than girls up to age three. After the age of three, girls are more susceptible than boys, and teenage girls average three colds a year to boys' two. The general incidence of colds continues to decline into maturity. Elderly people who are in good health have as few as one or two colds annually. One exception is found among people in their twenties, especially women, who show a rise in cold infections, because people in this age group are most likely to have young children. Adults who delay having children until their thirties and forties experience the same sudden increase in cold infections. The study also found that economics plays an important role. As income increases, the frequency at which colds are reported in the family decreases. Families with the lowest income suffer about a third more colds than families at the upper end. Lower income generally forces people to live in more cramped quarters than those typically occupied by wealthier people, and crowding increases the opportunities for the cold virus to travel from person to person. Low income may also adversely influence diet. The degree to which poor nutrition affects susceptibility to colds is not yet clearly established, but an inadequate diet is suspected of lowering resistance generally.

单选题His ideas about the current situation were so ______ that I had to agree with him.

单选题Uncle Vernon, quite unlike Harry Potter who looked nothing like the rest of the family, was large, very fat, and______, with an enormous black mustache.

单选题We all knew from the very ______ that the plan would fail. Now you see it becomes true. A．outbreak B．outcome C．outflow D．outset

单选题By using new foreign textbooks, we could not only learn the right expression of business ideas, but also we will know the latest developments in the business world.

单选题The young man dangled in midair, held by one {{U}}frail{{/U}} rope.

单选题Every man in this country has the right to live where he wants to, ______ the color of his skin.

单选题As a conductor, Leonard Bernstein is famous for his intensely vigorous and exuberant style. A. extreme B. enthusiastic C. prosperous D. nervous

单选题Professionals involving in such development should have a unique sense of innovation, the ability to assimilate new information, outstanding development skills and a striving sense of international cooperation.

单选题Daylight saving time was {{U}}instituted{{/U}} to increase productivity.

单选题Today, under such an unfavorable social condition, many postgraduate students hardly can escape from being sidetracked by things that are irrelevant to their healthy development. A. could hardly escape from being B. can hardly escape being C. hardly can escape from D. can hardly be escaping

单选题The advocates—mainly family therapy doctors—are applying a new approach to everything from {{U}}marriage{{/U}} conflict to psychosis.

单选题With the change of red lights, there are long queues of vehicles that wait while a few people who walk across the zebr

单选题Part of the funds will be used to ________ that old library to its original splendor.

单选题Many students agreed to come, but some students against because they said they don"t have time .

单选题Two {{U}}substitutes{{/U}} were used during the critical basketball game last night.

单选题I would rather stick to 'qualitative' work as more suitable for old age than for the young sinlings. A. congruous with B. useful for C. tailored to D. accustomed to

单选题When insects feed on decaying plant material in a compost pile, they help turn it into useful garden soil.

单选题Lincoln, who many regard as one of our great presidents, was often ______ despite his reputation of telling good jokes.