London will hold ______ 30th Olympic Games in July, 2012.[ ]
A. a
B. an
C. the
D. /
答案:C
—Can I have this seat?
—Sorry, I'm _____ you can't. It's our teacher's.[ ]
A. think
B. thinking
C. know
D. afraid
下列不适于高血压病人的运动方式是()
A.每天散步30分钟
B.画画
C.养花
D.养鸟
E.下棋