LEDs are different from light bulbs in that

LEDs are different from light bulbs in thatA.LEDs can send out light of differen

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Theparentsareworriedaboutthe abnormal behavioroftheirbaby.

Theparentsareworriedaboutthe abnormal behavioroftheirbaby. A.bad B.frightening C

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His long-term goal is to set up his own business.

His long-term goal is to set up his own business.A.idea B.energy C.aim D.Or

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(1)人类遗传一般可以分为单基因遗传、多基因遗传和__________遗传病。多基因遗传的发病除受遗传因素影响外,还与_

(1)人类遗传一般可以分为单基因遗传、多基因遗传和__________遗传病。多基因遗传的发病除受遗传因素影响外,还与__________有关,所以一般不表现

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下列属于种问竞争实例的是(  )。

下列属于种问竞争实例的是(  )。 A.蚂蚁取食蚜虫分泌的蜜露 B.以叶为食的菜粉蝶幼虫与蜜蜂在同一株油菜上采食 C.细菌与其体内的噬菌体均利用培养基中的氨基

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