【正文】 nsuredfordable : crossedunjustifiable : forgivenunpretentious: admiredinvulnerable: injured————————————————————————答案：(E) 不可防守的:被防守　 有價值的:被保險(xiǎn)的 可涉水而過的:通過的 無理的:被原諒的 樸實(shí)的，不做作的:被欽佩的 刀槍不入的:被傷害的　　　Because of its accuracy in outlining　　the Earth39。s subsurface, the　　seismicreflection method remains the　　most important tool in the search for (5) petroleum reserves. In field practice,a　　subsurface is mapped by arranging a　　series of wavetrain sources, such as　　small dynamite explosions,in a grid　　pattern. As each source is activated,(10) it generates a wave train that moves　　downward at a speed determined uniquely　　by the rock39。s elastic characteristics.　　As rock interfaces are crossed,the　　elastic characteristics encountered(15) generally change abruptly, which causes　　part of the energy to be reflected back　　to the surface, where it is recorded by　　seismic instruments. The seismic records　　must be processed to correct for(20) positional differences between the　　source and the receiver, for unrelated　　wave trains, and for multiple　　reflections from the rock interfaces.　　Then the data acquired at each of the(25) specific source locations are bined　　to generate a physical profile of the　　subsurface, which can eventually be used　　to select targets for drilling.The passage is primarily concerned withdescribing an important techniquediscussing a new methodinvestigating a controversial procedureannouncing a significant discoverypromoting a novel application————————————————————————答案：(A)　　由于“地震反射法”在勾畫地球的地面下部位這方面的準(zhǔn)確性，該方法一直是探尋石油儲存的最重要的工具。在實(shí)地作業(yè)中，通過將一系列波列源，諸如小規(guī)模炸藥爆炸，排列成為一網(wǎng)格模式，從而將地面下部位在地圖上標(biāo)繪出來。隨著每一個波列源得以被觸發(fā)，它就產(chǎn)生一個波列，該波列便以一特定速度向下移動，而其下移的速度僅僅取決于巖石的彈性特征。隨著巖石的界面被穿越，所遇的彈性特征一般會突然地改變，這便導(dǎo)致一部分能量反射回到地面，于是這部分能量就在地面被地震儀器記錄下來。地震記載必須加以處理，以便糾正波列源與接受器之間的位置差異，糾正無關(guān)的波列，以及糾正來自巖石界面的多重反射。然后，在每一個特定波列源位置獲取的數(shù)據(jù)被綜合起來，得出一個地面下部位的物理剖面圖，而這一剖面圖則能最終用來擇取目標(biāo)進(jìn)行鉆探?！ccording to the passage, in the seismicreflection method all of the followinghave a significant effect on the signaldetected by the seismic instrumentsEXCEPT thepresence of unrelated wave trainsplacement of the seismic instrumentsnumber of sources in the grid patternnature of the reflectivity of the rockinterfacesproperties of rocks through which thewave train has traveled————————————————————————答案：(C)　　由于“地震反射法”在勾畫地球的地面下部位這方面的準(zhǔn)確性，該方法一直是探尋石油儲存的最重要的工具。在實(shí)地作業(yè)中，通過將一系列波列源，諸如小規(guī)模炸藥爆炸，排列成為一網(wǎng)格模式，從而將地面下部位在地圖上標(biāo)繪出來。隨著每一個波列源得以被觸發(fā)，它就產(chǎn)生一個波列，該波列便以一特定速度向下移動，而其下移的速度僅僅取決于巖石的彈性特征。隨著巖石的界面被穿越，所遇的彈性特征一般會突然地改變，這便導(dǎo)致一部分能量反射回到地面，于是這部分能量就在地面被地震儀器記錄下來。地震記載必須加以處理，以便糾正波列源與接受器之間的位置差異，糾正無關(guān)的波列，以及糾正來自巖石界面的多重反射。然后，在每一個特定波列源位置獲取的數(shù)據(jù)被綜合起來，得出一個地面下部位的物理剖面圖，而這一剖面圖則能最終用來擇取目標(biāo)進(jìn)行鉆探?！t can be inferred from the passage thatthe seismicreflection method would belikely to yield an inaccurate physicalprofile of the subsurface in which of thefollowing circumstances?If the speed at which the wave trainmoved downward changedIf the receiver were not positioneddirectly at the wavetrain sourceIf the rock on one side of a rock interfacehad similar elastic characteristics to thoseof the rock on the other sideIf the seismic records obtained forthe different sources in a grid were highlysimilar to each otherIf there were no petroleum depositsbeneath the area defined by the grid ofwavetrain sources————————————————————————答案：(C)　　由于“地震反射法”在勾畫地球的地面下部位這方面的準(zhǔn)確性，該方法一直是探尋石油儲存的最重要的工具。在實(shí)地作業(yè)中，通過將一系列波列源，諸如小規(guī)模炸藥爆炸，排列成為一網(wǎng)格模式，從而將地面下部位在地圖上標(biāo)繪出來。隨著每一個波列源得以被觸發(fā)，它就產(chǎn)生一個波列，該波列便以一特定速度向下移動，而其下移的速度僅僅取決于巖石的彈性特征。隨著巖石的界面被穿越，所遇的彈性特征一般會突然地改變，這便導(dǎo)致一部分能量反射回到地面，于是這部分能量就在地面被地震儀器記錄下來。地震記載必須加以處理，以便糾正波列源與接受器之間的位置差異，糾正無關(guān)的波列，以及糾正來自巖石界面的多重反射。然后，在每一個特定波列源位置獲取的數(shù)據(jù)被綜合起來，得出一個地面下部位的物理剖面圖，而這一剖面圖則能最終用來擇取目標(biāo)進(jìn)行鉆探?！hich of the following best describesthe organization of the passage?A method is criticized, and an alternativeis suggested.An illustration is examined, and someerrors are exposed.An assertion is made, and a procedure isoutlined.A series of examples is presented, and aconclusion is drawn.A hypothesis is advanced, and supportingevidence is supplied.————————————————————————答案：(C)　　由于“地震反射法”在勾畫地球的地面下部位這方面的準(zhǔn)確性，該方法一直是探尋石油儲存的最重要的工具。在實(shí)地作業(yè)中，通過將一系列波列源，諸如小規(guī)模炸藥爆炸，排列成為一網(wǎng)格模式，從而將地面下部位在地圖上標(biāo)繪出來。隨著每一個波列源得以被觸發(fā)，它就產(chǎn)生一個波列，該波列便以一特定速度向下移動，而其下移的速度僅僅取決于巖石的彈性特征。隨著巖石的界面被穿越，所遇的彈性特征一般會突然地改變，這便導(dǎo)致一部分能量反射回到地面，于是這部分能量就在地面被地震儀器記錄下來。地震記載必須加以處理，以便糾正波列源與接受器之間的位置差異，糾正無關(guān)的波列，以及糾正來自巖石界面的多重反射。然后，在每一個特定波列源位置獲取的數(shù)據(jù)被綜合起來，得出一個地面下部位的物理剖面圖，而這一剖面圖則能最終用來擇取目標(biāo)進(jìn)行鉆探。　　　Modern archaeological finds can still　　contribute much to the study of ancient　　literature. For example, forty years　　ago a survey of the early Greek (5) dramatist Aeschylus39。 plays would have　　started with The Suppliant Women. Many　　factors internal to the play, but　　perhaps most especially the prominence　　of the chorus (which in this play has(10) the main role),led scholars to consider　　it one of Aeschylus39。 earlier works.　　The consensus was that here was a　　drama truly reflecting an early stage in　　the evolution of tragedy out of choral(15) lyric. The play was dated as early as　　the 49039。s ., in any event, well　　before Aeschylus39。 play The Persians of　　472 . Then, in 1952, a fragment of　　papyrus found at Oxyrhynchus was(20) published stating the official　　circumstances and results of a dramatic　　contest. The fragment announced that　　Aeschylus won first prize with his　　Danaid tetralogy, of which The(25) Suppliant Women is the opening play,　　and defeated Sophocles in the process.　　Sophocies did not pete in any　　dramatic contest before 468 ., when　　he won his first victory. Hence,(30) except by special pleading (.,that　　the tetralogy was posed early in　　Aeschylus39。 career but not produced　　until the 46039。s .), the Danaid　　tetralogy must be put after 468 . In(35) addition, a few letters in the fragment　　suggest t