单项选择题

As a scientific document ， the book should stand for several years until furtger______make revision______．

A．development；impossible
B．experiments； optional
C．advances；necessary
D．attempts；undesirable
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单项选择题
______，Marcia walked up to the podium and deliverer an animated acceptance speech．
A．Excited about winning the award．
B．Been excited with winning the award．
C．To be excited about winning the award
D．Exciting with winning the award
单项选择题
What do we learn from the news
A．New York is the first city using smartphones for taxi services in the U
S．
B．Similiar cases have been reported in some other European countries．
C．Passengers can use mobil apps to call taxi and make payment in N
Y．
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