题目内容：
Questionsare based on the following passage:Hillary Rodham Clinton released the first television spot of her Senate campaign this morn-ing, a 30-minute commercial that will begin airing statewide on Thursday. The spot, titled"First", uses numerous still photos to highlight landmarks in Mrs. Clinton' s career, while the voiceover says she is "more than a first lady. "
There is no mention of Mrs. Clinton' s rival for New York' s Senate seat, New York Mayor Rudolph Giuliani.
Clinton campaign spokesman Howard Wolfson said the ad was "positive" and "biographi-cal", instead of focusing on the first lady' s opponent.
Mrs. Clinton has previously aired radio ads, but has generally stayed with a strategy of mak-ing extensive campaign appearances instead of using television spots, while Giuliani has already run statewide TV ads.
Text of Hillary Commercial:
First she became a lawyer, named one of the top hundred in America.
Her first cause was children, fighting abuse and chairing the board of the Children' s Defense Fund.
(76) Her first priority was public schools, helping to establish teacher testing. More than a first lady. For 30 years, she' s fought for children and families.
As New York' s senator, she' II fight for better schools and heath care for children.
Hillary. Put her to work for all of us.
What does the word "air" in the first sentence mean? A．Dry.
B．Express.
C．Breathe.
D．Broadcast.
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