Dark Forces Dominate Universe
    The earth, moon, sun and all visible stars in the sky make up less than one percent of the universe. Almost all the rest is dark matter and dark energy, unknown forces that (51) astronomers.
    Observations in recent years have changed the basic(52)of how the universe evolved and have indicated how little is known about the major forces and substances that (53) our world.
    Astronomers now know that luminous(發(fā)光的)matter-stars，planets and hot gas —— Accounts (54) only about 0,4 percent of the universe. Non-luminous components, such as black holes and intergalactic(星系間的)gas, (55)up 3.6 percent The rest is either dark matter, about 23 percent, or dark energy, about 73 percent.
    Dark matter, Sometimes (56)" cold dark matter, has been known for some time. Only recently have researchers come to understand the key role it (57)formation of stars, planets and even people.
    "We (58) our very existence to dark matter," said physicist Paul Steinhardt and a co-author of a review on dark matter which (59)not long ago in the journal Science.
    "Dark matter dominated the structure(60)in the early universe," Steinhardt said.''For the first few billion years dark matter contained most of the mass of the universe You can think of ordinary matter (61) a froth(泡沫)of an ocean of dark matter.The dark matter dumps(結(jié)成塊)and the ordinary matter falls into it.That (62) to the formation of the stars and galaxies(星系)."
    Without dark matter, "there would be virtually no structures in the universe."
    The nature of dark matter is (63)It cannot be seen or detected directly astronomers know it is there because of its (64)on celestial(天體的)objects that can be seen and measured.
    But the most dominating force of all in the universe is called dark energy, a recently (65)power that astronomers say is causing the galaxies in the universe to separate at a faster and faster speed.
    51 A worry B move C puzzle D reject
    52 A understanding B value C pattern D structure
    53 A changed B described C designed D shaped
    54 A in B for C of D to
    55 A make B keep C set D get
    56 A written B called C identified D seen
    57 A signed B stressed C acted D played
    58 A believe B owe C feel D regard
    59 A appeared B carried C published D contributed
    60 A element B shape C formation D power
    61 A with B as C form D beside
    62A turned B worked C led D attempted
    63 A unknow B interesting C different D visible
    64 A form B outcome C effect D source
    65 A seized B proven C caught D grasped
    答案:
    51 C puzzle：使……感到迷惑。幾個(gè)選項(xiàng)中只有此選項(xiàng)意思符合原文。
    52 A 此句的意思是近年來(lái)的觀察改變了人們對(duì)于宇宙是如何演變的基本了解。其他幾個(gè)選項(xiàng)與原文不符。
    53 D 此處應(yīng)該是形成世界的各種物質(zhì)。故用D.
    54 B account for意思是占……比例，屬固定搭配。
    55 A make up 也是一詞組，表示"組成，構(gòu)成;占……"的意思。
    56 B dark matter又稱(chēng)為cold dark matter，此處只有called合適，其他幾個(gè)選項(xiàng)意思不符。
    57 D play a role in是一固定詞組，意思是"在……發(fā)揮作用".其他幾個(gè)選項(xiàng)不合適。
    58 B owe t0也是一固定搭配，意思是"認(rèn)為是靠……的力量"，此句的意思是"我們靠暗物質(zhì)的力量而存在".
    59 A 從上下文來(lái)講，選項(xiàng)A最合適，與文意相符。
    60 C 此處的意思是"暗物質(zhì)在宇宙早期結(jié)構(gòu)形成過(guò)程中起著主導(dǎo)作用".四個(gè)選項(xiàng)中只有c與文意符合。
    61 B 此題應(yīng)從結(jié)構(gòu)方面考慮。think…as…：把……視為……
    62 C　lead to是一固定詞組，意思是"導(dǎo)致……".
    63 A 從整個(gè)段落意思來(lái)考慮，只有選項(xiàng)A合適。
    64 c 此題亦需從上下文來(lái)考慮，effect指影響，只有此選項(xiàng)符合文意。
    65 B 暗物質(zhì)是被科學(xué)家們證明存在的一個(gè)能量。這種能量正影響著整個(gè)宇宙。被證明的：proven.其他幾個(gè)選項(xiàng)與文意不符。