单选题IMMEDIATE:(A) exhausting(B) manifold(C) prospective(D) complicated(E) inadequate

单选题IGNITE：

单选题MACABRE : SHUDDER::(A) torpid : embolden(B) homesick: domesticate(C) insipid : chuckle(D) overweening : plume(E) grisly : flinch

单选题Fromanestate，xdollarswasdistributedsuchthateachoftwochildrenreceiveddollarsandthewidowreceivedtheremaining$90，000．

单选题PODIATRIST: FEET ::

单选题Inthefigureabove,asquareiscircumscribedaboutacirclewithadiameterof20cm.PointsQ,R,S,andTarethemidpointsofthesquare'ssides.Whatisthetotalarea,incm2,ofthesquare?

单选题There are fourquestions below An art museum owns six paintings by an eighteenth- century painter．The paintings, listed in order by esti- mated value from lowest to highest, are F, G, H, S, T, and U．Paintings F, G, and H are landscapes; S, T, and U are portraits．At any one time, exactly three of the six paintings are on exhibit, subject to the following restrictions: The paintings on exhibit cannot all be landscapes． If the exhibit includes only one portrait, that portrait must be U． H cannot

单选题RESCIND : STATUTE::(A) propel : process(B) revoke: will(C) manifest : agreement(D) reiterate : institution(E) verify: oath

单选题ROE : FISH ::(A) skin : whale(B) shell: mollusk(C) pincer : crab(D) egg : bird(E) web : seal

单选题According to the passage, which of the following statements best describes the relationship between secondary atmospheric circulations and jet streams?

单选题 All mammals require sleep; it is an essential part of life. For giraffes, two hours aLine day is enough. For bats, that number is closer to twenty. The average adult human needs between seven and nine hours of sleep every day. Despite these differences, mammals all have one thing in common: If they do not get enough sleep, they can(5) suffer serious mental and physical consequences. The most extensive sleep research has been conducted on people. Through these studies, scientists have identified two broad categories of sleep, which can be further divided into five stages with distinct physiological functions. Taken together, they form a complete sleep cycle. The first four stages are marked by a(30) lack of rapid eye movement (REM). Therefore, they are referred to as non-REM sleep. While people are engaged in non-REM sleep, several things are occurring. Researchers have discovered that during this early sleep, the human body releases a series of hormones responsible for the proper functioning of certain body systems. Disrupted sleep can cause these hormones to fall out of balance.(15) The results can contribute to disorders such as diabetes, depression, infertility, or even cancer. Lack of sleep, especially in stages 3 and 4, can literally stunt the growth of children and may increase rates of obesity in adults. Stage 5 sleep is defined by the occurrence of rapid eye movement, otherwise known as dreaming. Note that, while REM sleep is the final stage in a sleep cycle,(20) a complete cycle generally lasts only about 95 minutes. A person will experience four to six cycles in one sleep session, with REM sleep taking up a larger portion of the cycle as the night continues. Scientists have advanced several theories about why humans need REM sleep. One view is that dreaming aids in memory consolidation. Under this theory, during REM sleep the brain not only strengthens(25) memory of important actions or events, but it weakens memory of unimportant things. Another view is that dreaming is necessary for proper central nervous system development. Yet another theory suggests that REM sleep involves the repair of monoamine receptors. The theories are not necessarily exclusive; in fact, they all reach the conclusion that REM sleep deprivation can result in death.

单选题According to the passage, scientists have concluded which of the following from the discovery of the large amount of deuterium found in comets?(A) Comets do not contain enough deuterium to have solely created the Earth's oceans.(B) Given the ratio of deuterium to ordinary hydrogen in seawater, comets cannot have contributed to the Earth's oceans.(C) It is likely that comets contain less Xenon than meteorites do.(D) Given the low level of deuterium in the waters of Earth's oceans, comets cannot be its sole source.(E) Comets now play a greater role in the creation of the Earth's oceans than was previously thought.

单选题SPLENDOR:(A) foulness(B) corruption(C) avarice(D) transformation(E) sincerity

单选题It can be inferred from the passage that scientists are "perplexed by the means" (line 12) for which of the following reasons?

单选题The ______ of sediment in the river caused concern among environmentalists and industrialists alike; the water levels in the river were being reduced almost daily.(A) accretion(B) disposal(C) catalyst(D) alienation(E) ethnology

单选题RENEGADE : FEALTY ::(A) infidel: excommunication(B) apostate : euphoria(C) traitor: treason(D) bigot : tolerance(E) misanthrope : self-esteem

单选题COLLUSION: CONSPIRATORS ::(A) edition : journalists(B) collaboration : partners(C) sportsmanship : umpires(D) ascription : translators(E) summarization : critics

单选题Current estimates put thirteen percent of global flora at risk of extinction, but this number does not include ------- plants from tropical regions, where the majority of the world's plants grow.