21. Bill Clinton said during his two terms as president America had moved out of _______ industrial economy into ______ information age.
A. an; an B. the; an C. an; the D. 不填; 不填
22. —Which of these two books will you take？
—I’ll take ______, in case the journey is boring.
A. either B. both C. all D. neither
23. The Roma people originally lived in northwest India in _______ is now southeastern Pakistan.
A. what B. which C. that D. where
24. Do you think that bridge _______ 2,000 meters long? It doesn’t appear ______ long.
A. measures; that B. is measured; so C. is measured; such D. measures; much
