It can be seen from the passage that theeach’S supply of natural medicines

A . admires the beauty of the snowflakes． B . dislikes the changing growth history of the snowflakes． C . has a particular feeling for those flower—like crystals． D . Iikes to compare snowflakes to the stars in the sky．

A．raising the world’s temperature only a few degrees would not do much harm to life on the earth B．lowering the world’s temperature merely a few degrees would lead many major farming areas to disaster C．almost no temperature variations have occurred over the past decade D．the world's temperature will remain constant in the years to come

A．it's mere(只不过的)fuss(小题大做)to write so much about the ideas, feelings, and actions of youth B．the author blames the young for being trouble-maker at home C．the author blames the parents for not understanding what their children think and feel D．the trouble in American families is often caused by difference ideas and opinions between parents and children

A．the human eye is sensitive to all wavelengths B．colors are related to wavelengths C．there are more color-blind women than color-blind men D．failure of rods cause color-blindness

A．is in favor of prohibiting passengers' use of electronic devices completely B．has overestimated the danger of electromagnetic interference C．hasn't formed his own opinion on this problem D．regards it as unreasonable to exercise a total ban during flight 此题为多项选择题。

A．the Obama administration takes on some members of the Bush crew. B．some members of the Bush crew are involved in negative publicity. C．Obama"s approach to national security is proved by Cheney to be a failure. D．George Bush is not popular with Americans as a president at all.

A．killing foxes with poison is illegal B．limiting the fox population is unnecessary C．hunting foxes with dogs is considered cruel and violent by some people D．fox-hunting often leads to confrontation between the poor and the rich

A．half of college students hold credit cards B．students will no longer get credit cards C．over 4/5 college students have debt difficulties D．tuition is too high for most of the college students

A．hopes the Boeing 787 dream liner can draw the world's attention. B．is the first air show since the world's economic depression in 2008. C．can be an indicator of the world economy in a certain way. D．does not include military aircrafts in the show.

A．people had to buy things at certain shops before B．the prices of big companies' goods are much lower C．fixed prices are not welcome by customers D．there are fewer markets in some states than in others

A．Mr. Cattanzara was surprised at George's reading plan. B．Mr. Cattanzara was doubtful about George throughout. C．George was forced to tell a lie and then regretted. D．George lied at the beginning and then became serious.

A．is part of Microsoft"s Windows operating system. B．can help a computer to avoid online criminals. C．is offered by legitimate Web sites. D．can control a computer through its system weakness.

A．should be driven out of the country that they inhabit in B．may do harm to people's lives C．will be praised for their deeds D．must be respected for their heroic deeds 此题为多项选择题。

A．human activities will do grave damage to rainforests B．Amazon rainforest soils used to be the richest in the world C．farming is responsible for the destruction of the Amazon rainforests D．there once existed an urban civilization in the Amazon rainforests

A．the students' behavior. in the classroom is very bad B．the teachers do not have a strong sense of responsibility C．the educational department should be to blame D．the teachers should be able to adjust their teaching methods to the development of society

A．is in favor of choice advocates B．does not like the idea of abortion C．wants Roe to be arrested D．is not very popular in the country 此题为多项选择题。

A．not all hacking attempts are worthy of investigation B．information of the victims is inaccessible C．InfraGard chapters will be in effect by the end of September D．Amazon.com was often disrupted by hacking

A．to assist innocent prisoners through DNA testing. B．to aid the law enforcers in finding the criminals. C．to prevent the injustice conviction in future. D．to verify all of the misidentification.

A．men suffer more from sun's radiation than women do. B．men will be more exhausted than women after a long trip. C．the higher proportion of fat in women's body makes them easier to lose weight. D．an aged man can still exercise his body as he was young.

A．has no positive effect at all B．is unavailable to most sufferers C．tends to be refused by the sufferers D．can lead to improvement in the sufferers' lives

A．is critical at the start-up stage of electric vehicles. B．has no influence on consumers" buying interest. C．can greatly reduce the city"s pollutant emission. D．should support the mass adoption of electric vehicles.