斜井运送材料，把钩工可以一次放多个车至井口挡车器。
参考答案：错
若代数式2x+5的值是正数，则x应满足的不等式是______．
She is ___ at all the subjects, and she is ___ student in her class. [ ]
A. good; best
B. well; best
C. good; the best
D. well; the best
