>>>>自考萬題庫：歷年真題在線測試 點擊下載>>

　　>>>>2017自考名校VIP特招班最后名額>>

　　1.單選題

　　[填句補文]Gang Xiao and Ben Schrag at Brown University， visualize the current by measuring subtle(細微的) changes in the magnetic field of an object and ________.

　　A、to shrink it to the size of a desktop computer

　　B、to make it capable of measuring very weak changes in magnetic fields

　　C、as well as revealing microscopic defects in anything from aircraft to banknotes

　　D、converting the information into a color picture showing the density of current at each point

　　正確答案：D

　　答案解析：空格前的by在句中引導兩個在句法結構上并列的分詞短語：一個是measuring subtle (細微的) changes in the magnetic field of an object;另一個就是converting the information into…，即：通過測量一個物體的磁場內的細微變化和把信息轉化成顯示每一點電流強度的彩色圖片而使電流顯現(xiàn)。

　　2.單選題

　　[填句補文]The black robin(旅鶇)is one of the world‘s rarest birds. It is a small， wild bird， and it lives only on the island of Little Mangere， off the coast of New Zealand. In 1967 there were about fifty black robins there; in 1977 there were fewer than ten. ________.

　　A、These are the only black robins left in the world.

　　B、Those that fail to meet the challenges will disappear early.

　　C、Both represent orders in the classification of life.

　　D、Detailed studies are going on， and a public appeal for money has been made.

　　正確答案：A

　　答案解析：前文說的是The black robin(旅鶇)的現(xiàn)存數(shù)量和活動地點。選項A說的是這里成為有The black robin的唯一的地方。所以，選項A是合適的選項。

掃描/長按二維碼即可幫助自考通關

獲取2017自考最新資訊

獲取最后6套預測卷

免費獲取8次直播課程

獲取歷年考試真題試卷

自考萬題庫【手機題庫下載】丨微信搜索"萬題庫自考"

萬題庫自考2群：475010717

　　相關鏈接：

　　各地2017年自考大綱、教材目錄相關調整匯總

　　考試吧策劃:歷年自考真題及答案在線估分專題

　　2017年自考報名方法 ※ 2017年自考報名條件

　　各地自考報名入口 ※ 2017自學考試報考指南

　　2017自考時間安排 ※ 各地2017年自考報名時間