单选题It can be inferred from the passage that which of the following would occur if the chimneys formed by superbubbles failed to deliver their hot interior gas?Ⅰ. The surrounding galaxy would lack enough cool gas clouds to form new stars.Ⅱ. Positive feedback in the star formation process would go unchecked.Ⅲ. More and more O-type stars would come into existence from the static gas clouds.
单选题OPPROBRIOUS:
单选题GRATUITOUS:
单选题Inthefigureabove,theareaofsquareABCD,is100,theareaoftriangleDECis10,andEC=ED.WhatisthedistancefromAtoE?
单选题The passage implies that research into the cause of human narcolepsy has been complicated by what aspect of the human brain?(A) The tendency of certain neurons to resemble foreign matter that HLAs reject(B) A lack of apparent neurological damage caused by a tendency to remove debris through support cells(C) Its susceptibility to diseases like Parkinson's and Alzheimer's(D) Its tendency to reject the drugs which scientists have developed to treat narcolepsy's symptoms(E) The effects of aging on the symptoms of the disease
单选题OBDURATE:(A) inflexible(B) yielding(C) obsolete(D) facile(E) methodical
单选题PRETERNATURAL:
单选题The new ---- of knowledge has created ---- people: everyone believes that his or her subject cannot and possibly should not be understood by others
单选题RAUCOUS:(A) orderly(B) absorbent(C) mellifluous(D) contentious(E) buoyant
单选题Abasketcontainsatotalof30applesandpears．Ifitcontainstimesasmanyapplesaspears，howmanypearsdoesitcontain?A.9B.10C.12D.18E.20
单选题Therearesixmembersonacommittee,fourwomenandtwomen.TheyagreetorandomlypulltwonamesoutofahattoserveasChairandSecretaryforthegroup.Whatistheprobabilitythatbothofthemenarechosen?Givetheprobabilityasafractioninlowestterms.
单选题n=7·193
单选题GLADE: FOREST ::(A) acme : mountain(B) clearing : thicket(C) beach : sea(D) soil : trench(E) brook : levee
单选题INFALLIBLE : ERROR ::(A) irreversible : cure(B) invulnerable : emotion(C) impeccable : flaw(D) intolerable : defect(E) immovable : choice
单选题MAWKISH: SENTIMENTAL::(A) noisy : cacophonous(B) convivial : undemonstrative(C) acerbic : piquant(D) abundant: fulsome(E) cloying : sweet
单选题Percentageofstudentswhoreportedspendingtimeonhomeworkandwatchingtelevision
单选题SCULPTOR : STONE :(A) essayist : words(B) painter : turpentine(C) composer : symphony(D) logger : timber(E) etcher : acid
单选题According to the passage, air turbulence generally does which of the following? Ⅰ. Creates small droplets of equal size to form in cloud cores. Ⅱ. Causes different concentrations of rain droplets to form in different places. Ⅲ. Speeds up the rate by which large droplets appear.(A) Ⅰ only(B) Ⅱ only(C) Ⅰ and Ⅱ only(D) Ⅱ and Ⅲ only(E) Ⅰ,Ⅱ, and Ⅲ
单选题Her disheveled clothing and ______ hair surprised me; Amanda's appearance is normally very polished and chic.
单选题At one time few judges were friendly to unions, as demonstrated by a steady stream of decisions______strikes, boycotts, picket lines, and other collective actions.(A) permitting(B) attenuating(C) intensifying(D) proscribing(E) remitting