48. A ____ school boy, LiLida, first tried to swim across the
Qiongzhou Channel in June, 2000.
A. 12 - year
old B. 12 - years - old C. 12 -
year- old D. 12 years old
49, In our exam, the____ careful we are, the ______mistakes we’ll
make.
A. more,
more B. more, less C. less, fewer D. more, fewer