读下图,完成下列各题。
(1)兴建水库可以调控 和 ,还可以解决水资源 的问题。
(2)兴修水库还有 等作用。
(1)径流;水量的季节变化;时间分布不均
(2)防洪发电、灌溉及城市用水
— Jack is very clever and he studies hard as well.
— No ________ he always comes out first in the exams.[ ]
A. answer
B. question
C. wonder
D. problem
厂外煤泥量