A：as a clever boy a
B：as clever a boy a
C：the same clever boy a
D：a boy the same clever a
一个长方形操场长120米，宽60米，画在练习本上，选取（ ）的比例尺比较合适．
— What can we learn from the story?
— No pains, no gains.
198×6≈____
902×4≈____
89×8≈____
