水稻赤枯病症状有缺钾型赤枯、缺磷型赤枯、缺铜型赤枯。
参考答案：错
下列各行为属于后天学习行为的是
①蜜蜂采蜜后可沿原路返回蜂巢 ②老鼠走迷宫 ③母鸡孵小鸡
④雌雄动物间的相互识别 ⑤猩猩用树枝剔牙齿
A．①②
B．②③
C．②⑤
D．④⑤
My sister wants a new dress. She ________ it to the party, [ ]
A. wears
B. has worn
C. wore
D. is going to wear
