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.

未分类题We may infer from the last paragraph thatA．treating burn victims is not a problem now.B．real skin replacement means skin grafts with rejection.C．people at the Army medical center has grown each soldier's graft.D．one way to treat burn victims is to grow a patient's own skin as a graft.

未分类题What was the result of doubling the funding from $42.5 million to $85 million over 5 years?A．There would be much more wounded people who can be cured.B．Another consortium could come in to compete with the planned one.C．Researchers in the consortia's 28 research groups could get more public and private funds to match DOD's input.D．Robert Vandre would change the consortium to a larger one.

单项选择题氨苄青霉素可采用的含量测定方法是:()

单项选择题人体肝细胞属于()

单项选择题联觉是指()

单项选择题深昏迷最突出特点是：()

未分类题Chietigj Bajpaee is cited to illustrate that developing countriesA．are working hard to buy farmland.B．are considered not able to stop the conversion of land.C．are exception in solving the food problem.D．are imposing rules to preserve farmland.

未分类题The authors attitude towards promotion of homeownership is

未分类题We may infer from the second paragraph thatA．Will Wright is the producer of the film.B．the description of the film on the Website is an advertisement of Spore.C．Will Wright visited the scientists to learn something about biology.D．the documentary is a film of 150 minutes.

单项选择题下列有关自溶作用最适合的选项是()

未分类题We may infer from the fifth paragraph thatA．Spore promoted the process of evolution.B．scientists support the game Spore.C．Spore is a good way for children to learn about the life on earth.D．the film creates a good impression of the game.

未分类题Which of the following would be the best title for the passage?A．Spore Documentary Spawns Protest by Scientists Who Starred in ItB．A Film About EvolutionC．The Most Ambitious GameD．Game Creators and Scientists

未分类题According to the first paragraph, what happened to the waters off southern Greenland and Iceland in the last 30 years?A．The waters are salty.B．The waters are not very salty.C．The salinity is decreasing.D．The sea water is becoming less and less.