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问题 判断题

在一个自由授粉的植物遗传平衡群体中，已找到矮源植株(dd)频率约占1%，该群体中含d的杂合体所占比例为0.01。( )

答案

参考答案：错

填空题

Questions 14-18


·Using the information in the text, complete each sentence 14-18 with an expression from the list below.
·For each sentence (14-18), mark one letter (A-G) on the Answer Sheet.
·Do not mark any letter twice.
  • A. in emergencies
  • B. in the face of competition
  • C. in their own cars
  • D. in different towns
  • E. in the minority
  • F. in the local community
  • G. in the majority


Most people choose corner shops only ______.
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单项选择题

下列数据结构中属于非线性结构的是______。

A) 队列
B) 线性表
C) 二叉树
D) 栈
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