託福選擇題試題訓練

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。

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

(A)as on

(B)because

(C)the way that

(D)similarly。

ka 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。

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。

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