形成雷暴雨的基本条件是什么?
参考答案:不稳定直减率,初始升力以及充足的水蒸气。
This village is rather poor. What should the government officers do first if they want to __________ it?
A.decide
B.develop
C.describe
D.discover
Her mother is very happy because she has won the first ________ in the national English competition. [ ]
A. scholarship
B. reward
C. award
D. medal