题目

Bill was fed up. All he wanted was to do things in his way. Why did all the wolves have to do everything_____anyway?One day, the pack(狼群)was walking through the woods. Bill had a(n) _____that there was food down a path, but the pack didn’t want to go that way.Finally, Bill said, “Why do we need a______anyway? I’m going to go down that path and I’ll have plenty to eat! I don’t need you guys!”The pack said, “Bill, you can’t try______on your own, but we need to work together in our pack. Packs help us survive.”Bill didn’t _____them. He ran off on his own. He ran for mi在农业生产中,用一定浓度的植物生长素类似物作为除草剂,可以除去单子叶农作物田间的双子叶杂草。如图表示生长素类似物浓度对两类植物生长的影响,则A、B曲线分别表示何类植物,以及应当选用生长素类似物的浓度是(   )A.双子叶植物、单子叶植物;c点浓度 B.单子叶植物、双子叶植物;a点浓度C.双子叶植物、单子叶植物;b点浓度D.单子叶植物、双子叶植物;b点浓度
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