昆虫受到刺激后,向刺激来源运动,称为正趋性,反之,称为负趋性。
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金龟子、象鼻虫、叶蛹、大灰象甲,银纹夜蛾等,在防治上常利用假死性将其震落捕杀。
A. 对
B. 错
昆虫的卵、幼虫、蛹、成虫都能休眠。
A. 对
B. 错
利用扰火、诱蛾灯或黑光灯等诱杀,均属物理机械防治法。
A. 对
B. 错
Why was Father’s Day created?
A. To honor men’s contributions in society.
B. To remember the men killed in a mining accident.
C. To remind people of men’s role in the family.
D. To honor the men who lost their lives in wars.