托福习题练习

托福考试易错题(2018/4/8)
1题: Just as remote-controlled satellites can be employed to explore outer space, _______employed to investigate the deep sea.
A.can be robots
B.robots can be
C.can robots
D.can robots that are
【单选题】:      

2题: What does the passage mainly discuss
A.( The effects of human activities on prehistoric wildlife
B.( The origins of the hunter-gatherer way of life
C.( The diets of large animals of the Pleistocene epoch
D.( The change in climate at the end of the Pleistocene epoch
【单选题】:      

3题: A uniform mingling of molecules, (which it) occurs in homogeneous chemical compounds, results from the (chemical) constituents melting, dissolving, (or) diffusing into (one another).
A.which it
B.chemical
C.or
D.one another
【单选题】:      

4题: Areas of fertile soil called deltas, usually ______ are formed by mud deposited at the mouth of a river.
A.(triangular in shape
B.( their shape is triangular
C.( they have a triangular shape
D.( triangular shape
【单选题】:      

5题: It can be inferred that the "safety valve" in line 13 refers to
A.(a new kind of machinery
B.( an alternative for urban workers
C.( an area in a factory
D.( a procedure designed to protect workers
【单选题】:      

 

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