单选题By______scientific rigor with a quantitative approach, researchers in the social sciences may often have______their scope to whose narrowly circumscribed topics that are well suited to quantitative methods.
单选题In two broad food categories the consumer actually shifted her trade up to the higher cost per unit item, in the cereal category she shifted to lower-cost packages.
单选题Domestic tourists now make up more than 90 percent of the country's total and______two-thirds of its total tourism earnings.
单选题Wives tend to believe that their husbands are infinitely resourceful and versatile.
单选题David always had a bedtime story at 7 o'clock______.
单选题The vast majority of people in any given culture will ______ established standards of that culture.
单选题It was cloudy this morning, but it ______fine.
单选题In his paintings, Picasso tried to capture the ______of his subjects.
单选题The seller shall, at his own ______, carry out at the place of manufacture all such inspections of the equipment as are specified in the contract.
单选题The seating of musicians in an orchestra is arranged ______ to produce the desired blend of sounds from the various musical sections.
单选题He carried out extensive research into the local real estate market before he decided to ______a mortgage.
单选题During World War II the Allies suffered a long ______ of defeats before they finally achieved victory.
单选题Several unpopular decisions ______ the governor's popularity.
单选题Humans derive about 20% of their protein from animal-based products now, but this may need to drop to just 5% to feed the extra two billion people expected to be alive by 2050, according to research by some of the world"s leading water scientists.
单选题In the ______of the hurricane, many people's homes were destroyed.
单选题______ modern offices becoming more mechanized, designers are attempting to personalize them with warmer, less severe interiors.
单选题Patriotism was the army captain"s______when he spoke at our school assembly.
单选题When decimal currency was introduced, one old man in the village said, "I don't think it will ______ round here. "
单选题Some polls show that roughly two-thirds of the general public believe that elderly Americans are______ by social isolation and loneliness.
单选题Tom is one of the top students who ______ by the headmaster.