25. Many scientists believe that global warming, if , will cause extreme climate changes this century.
A. not stopping B. no stop C. not stopped D. without stopping
26. ---Could you give me some paper? I seem to have ______.
---No problem. Help yourself.
A. run out B. given out C. run out of D. used up
27. The special kind of dog can run surprisingly quickly ____ its awkward and lazy pace.
A. in search of B. in case of C. in spite of D. in need of
