阅读答案：

　　21、C. increase the economic strength of Britain's towns.

　　22、B. a self-deceiving attempt.

　　23、C. brings its local arts to prominence.

　　24、A. a contrasting case

　　25、C. Favourable

　　26、A. its content acquisition costs nothing

　　27、D. thrived mainly on university libraries

　　28、B. concerned

　　29、D. allow publishers some room to make money

　　30、C. The few feed on the many

　　31、A. help little to reduce gender bias

　　32、C. It may go against the Constitution

　　33、D. the needlessness of government interventions

　　34、C. the entry of unqualified candidates into the board

　　35、B. Feasibility should be a prime concern in policymaking

　　36、C. impose a levy on tech multimationals

　　37、A. may trigger countermeasures against France

　　38、B. the current international tax system needs upgrading

　　39、C. is faced with uncertain prospects

　　40、B. France leads the charge on digital tax

　　41、C. Eye contact can be a friendly social signal

　　42、F. Most people are not comfortable holding eye contact with strangers

　　43、G. Eye contact can also be aggressive.

　　44、B. Too much eye contact is instinctively felt to be rude

　　45、D Personality can affect how a person reacts to eye contact