题目

The boy was ___________ clever that he can work out the problem in ___________ a short time. A . so; so B . such; so C . so; such D . such; such 答案：C直接写得数7.5÷1.5=2.75+7.25=1.6÷0.01==-==÷0.2=3.1×9.93≈1000×0.65=1--0.25=