What can we learn from the passage?
A．The present situation of women's social status is satisfying.
B．NAS will address gender-related problems one by one.
C．The report posted by IAC doesn't give a clear evaluation of gender problems.
D．The only aim of the report was to remove barriers and increase chances for women.

未分类题In the United States, both genomicists and plant scientists want to find outA．the way converting sugars from crops such as corn or sugarcane to ethanol.B．how to process cellulose from the cell walls of stems and leaves.C．how to increase the oil content of oil-producing crops.D．how to make high-energy plants.

未分类题Why switch grass and Miscanthus were taken as energy plant?A．Because they contain more cellulose.B．Because genomes have been sequenced for clues to make other plants better energy crops.C．Because some scientists are breeding a wide variety of candidate crops.D．Because the spotlight is on this underdeveloped field.

未分类题Which of the following best summarizes the main idea of the passage?A．Plant Breeders' dream will come true.B．Converting sugars from crops is a threaten to the food supply.C．The research on the high energy plant is being done.D．Cost-effective biofuels are very popular now.

未分类题Why the individuals, companies as well as governments are desperate for farmland?A．Because people get food mainly from farmland.B．Because 50 million acres farmland vanish each year.C．Because farmland is the potential investment.D．Because people see the farmland as the root of all commodities.

未分类题The word 'backfire'(Line 3, Para. 8)most probably meansA．to come to their senses.B．to produce helpful results.C．to make little progress.D．to get an outcome against the purpose.