【单选题】在自然状态下,某一桦树林中出现了云杉树苗,云杉长大后,高度超过桦树林。桦树不如云杉耐阴,而逐渐减少,最终形成以云杉为主的树林,这种现象是
【单选题】“将仇人的头发或穿过的衣物等埋藏,他们认为这就可置仇人于死地。”这种巫术的依据的原理是:
【单选题】在自然状态下,某一桦树林中出现了云杉树苗,云杉长大后,高度超过桦树林。桦树不如云杉耐阴,而逐渐减少,最终形成以云杉为主的树林,这种现象是()
【单选题】In DNA double strands, the strand that guides the synthesis of RNA is called .
E.
None of the above is correct
【单选题】In the DNA double strand, the strand that guides the synthesis of RNA is called
【单选题】In the DNA double strand, the strand that guides the synthesis of RNA is called ( )