10．听第9段材料，回答第16至第20五个小题．
16．Where does Franco work？
A．In a factory．
B．In a hospital．
C．In an office．
17．How long is his summer holiday every year？
A.30 days．
B.15 days．
C.7 days．
18．How did he go to San Francisco？
A．By plane．
B．By sea．
C．By train．
19．What did he see when he arrived at San Francisco？
A．A poster．
B．A letter．
C．A friend．
20．What did he do in San Francisco？
A．He traveled in the countryside．
B．He helped the injured （受伤的） people．
C．He talked to the people there．
