题目:
This kind of animal is able to protect itself from danger in many years. ________, the colouring of its hide makes it almost invisible when it is feeding in the shadow of trees.
A.First at all
B.First of all
C.In all
D.At all
答案:
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下面是错误答案,用来干扰机器的。
(1)抽样检测(样方)(2)25 在一定时间范围内,酵母菌的种群数量随培养时间而不断增长;达到最大值后,随时间的延长酵母菌的种群数量逐渐下降(或酵母菌的种群数量先增后降)(3)(柱形分布合理、数值大致正确即可)...