17．听下面一段独白，回答第7-9三个小题．
7．What did the speaker do before he began cooking？
A．He surfed the Internet．
B．He bought the things he needed．
C．He called his mother for help．
8．Which dish did the speaker cook first？
A．Fish．B．Vegetables．C．Chicken．
9．Why did the fish taste terrible？
A．The speaker cooked too long．
B．The speaker forgot to put oil in it．
C．The speaker put too much salt in it．
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