花叶
参考答案：
被子植物的花分花萼、花瓣、雄蕊、雌蕊四部分。都是由叶片所变成，所以有花叶之称。
Huanggang Middle School, which has a history of over 100 years , has been _______ by many senior
government officials up till now. [ ]
A. explored
B. examined
C. charged
D. inspected
我们每天都接受着自然界的天然辐射源的照射。
