Undersea vehicles _________ .




A.are too small for a man to fit inside
B.are very slow to respond
C.have the same limitations that divers have
D.make direct observations of the ocean floor

A.arrive
B.apply
C.university
D.between

A.delights
B.tasks
C.feelings
D.hopes

_______(48)




A.freedom
B.freely
C.free
D.freeing

According to the next, Asian elephant can be extinct because of_________.




A.loss of habitat
B.hunting
C.change of climate
D.polluted environment

How can Asian elephants find new food supplies?




A.They made forests larger.
B.They found other plants.
C.They migrated with the seasons.
D.They could grow plants and trees.

Peter: Thanks a lot for your wonderful gift. – Mary: _________.




A.You are welcome
B.Please
C.Welcomed
D.Thank you

A.played
B.marked
C.managed
D.penalized

_______(75)




A.tunnels
B.burrows
C.caves
D.dungeons

The words those refers to ____________ .




A.ships
B.vehicles
C.problems
D.computers