1.   Philip Vernon was beginning to question the efficiency of tests by querying whether they measured accurately.

2.   Economists wondered why Greenspan, a strident free marketer, was questioning the efficiency of the financial markets.

3.   Others, however, either question the efficiency of the tents or the ethics of those using such an artificial aid to improve athletic performance.

4.   However, the Socialists and centrist opposition parties questioned the efficiency of the measure, saying it was too late.

5.   The party questioned the efficiency of the services.

6.   The pilots are upset over a Thai Airways International Union letter questioning their efficiency, and want an apology.

7.   Many members have questioned the efficiency of the United Nations as well as its ability to carry out its missions.