1.Saint Giong was unable to talk,smile,or word---------  he was three years old.
     A.if       B.because         C.while         D.even though
2.Chicago ------------------''The Windy City''
     A.often calls         B.is often called        C.often is called        D.often called
3.If the teacher were here now,  we'd ask him the diference ----------''science'' and 'technology'
     A.between           B.of                           C.among                  D.for
4.--------------- is a storm with thunder and lightning,and usually very heavy rain.
     A.Sandstorm       B.Thunderstorm        C.Landslide              D.Volcano
5.Banh Chung is the----------  food at Tet in Viet Nam 
      A.traditionalist     B.tradition            C.traditional                 D.traditionally
6.Some teenagerd spend most of their time playing computer games,------------- they lost their interests in daily activities
      A.so                    B.however           C.moreover                   D.and