托福选择题试题训练

时间:2017-10-22 编辑:晓贤 手机版

  1.The Chisos Mountains in Big Bend National Park in Texas were created by volcanic eruptions that occurred _____。

  (A)the area in which dinosaurs roamed

  (B)when dinosaurs roamed the area

  (C)did dinosaurs roam the area

  (D)dinosaurs roaming the area。

  2.In bas-relief sculpture,a design projects very slightly from its background,_____ some coins。

  (A)as on

  (B)because

  (C)the way that

  (D)similarly。

  3.Alaska found the first years of its statehood costly because it had to take over the expense of services _____ previously by the federal government。

  (A)To provide

  (B)Be provided

  (C)providing

  (D)provided。

  4.With age,the mineral content of human bones decreases,_____ them more fragile。

  (A)make

  (B)and to make

  (C)thereby making

  (D)which it makes。

  5.。Not until Kentucky‘s Mammoth Cave had been completely explored in 1972_____。

  (A)when was its full extent realized(B)that its full extent realized

  (C)was its full extent realized

  (D)the realization of its full extent。

  6.The first explorer _____ California by land was Jedediah Strong Smith,a trapper who crossed the southwestern deserts of the United States in 1826。

  (A)that he reached(B)reached

  (C)to reach

  (D)reaching it

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