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CORPORATE TRAVEL EXHIBITIONThis year"s Corporate Travel exhibition will take place on 13 and 14 October. The exhibition is twice the size it was last year 1 the organisers have been successful in attracting many more 2 airlines, hotels and car rental companies than in the past. 3 150 companies will have stands 4 the exhibition.During the two days of the exhibition, 5 will be a programme of seminars 6 a wide range of subjects related to business travel. Each of 7 will provide professional advice on ways in 8 firms can obtain a high level 9 service at the most competitive prices. Participants will have the opportunity to learn 10 to achieve savings of up to 40% on 11 annual travel budgets.The exhibition will be open 10.00-17.00 on 12 days.

A. with
B. on
C. at

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CORPORATE TRAVEL EXHIBITIONThis year"s Corporate Travel exhibition will take place on 13 and 14 October. The exhibition is twice the size it was last year 1 the organisers have been successful in attracting many more 2 airlines, hotels and car rental companies than in the past. 3 150 companies will have stands 4 the exhibition.During the two days of the exhibition, 5 will be a programme of seminars 6 a wide range of subjects related to business travel. Each of 7 will provide professional advice on ways in 8 firms can obtain a high level 9 service at the most competitive prices. Participants will have the opportunity to learn 10 to achieve savings of up to 40% on 11 annual travel budgets.The exhibition will be open 10.00-17.00 on 12 days.

A. cover
B. covers
C. covering

Why does the woman want the job

A. to reduce travel time
B. to learn about computers
C. to earn more money

CORPORATE TRAVEL EXHIBITIONThis year"s Corporate Travel exhibition will take place on 13 and 14 October. The exhibition is twice the size it was last year 1 the organisers have been successful in attracting many more 2 airlines, hotels and car rental companies than in the past. 3 150 companies will have stands 4 the exhibition.During the two days of the exhibition, 5 will be a programme of seminars 6 a wide range of subjects related to business travel. Each of 7 will provide professional advice on ways in 8 firms can obtain a high level 9 service at the most competitive prices. Participants will have the opportunity to learn 10 to achieve savings of up to 40% on 11 annual travel budgets.The exhibition will be open 10.00-17.00 on 12 days.

A. if
B. when
C. as

已知函数f(x)=x3+3ax-1，g(x)=f′(x)-ax-5，其中f′(x)是f(x)的导函数．对满足-1≤a≤1的一切a的值，都有g(x)＜0，求实数x的取值范围；