17世纪，植物学家格鲁通过解剖花，描述花的结构：“在花中有产生_爱下问搜题

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问题选择题

17世纪，植物学家格鲁通过解剖花，描述花的结构：“在花中有产生精子的部分，其中有相当于动物精子的小球，能使相当于卵巢的部分发育受孕．”下列分析中错误的是（　　）

A．格鲁所述“花中产生精子的部分”其实就是指雄蕊（或花药）

B．格鲁所述“花中相当于卵巢的部分”其实就是指雌蕊

C．格鲁所述“相当于动物精子的小球”是指花粉粒

D．格鲁所观察的植物很可能是蕨类植物

答案

A：格鲁所述“花中产生精子的部分”是指产生花粉的结构应是雄蕊（花药）

B：格鲁所述“花中相当于卵巢的部分”指的是能产生卵细胞的结构，应是雌蕊．

C：格鲁所述“相当于动物精子的小球”指的是含有精子的结构应是花粉粒．

D：蕨类植物不会开花，故本选项错误

故选D

填空题

设P是曲线y²=4（x-1）上的一个动点，则点P到点（0，1）的距离与点P到y轴的距离之和的最小值是 ______．

完形填空

In a land far away, once upon a time there was great poverty （贫困）,and only the rich could manage without great _1_. Three of those rich men and their servants were_2_together on a road when they came to a very_3_village.
The first could not stand seeing the poverty, _4 he took all the gold and jewels from his wagons (四轮载重马车) and shared _5 out among the villagers. He wished them all the best of luck, and he left.
The second rich man ,seeing the _6 situation, stopped for a short time and gave _7 all his food and drink, since he _8 see that money would be of little _9 to them. He made sure that they each _10 their fair share and would have enough food to _11 for some time . Then, he left.
The third rich man, on seeing such poverty, _12 and went straight through the _13 without stopping. The two other rich men saw this from a distance and commented with each other_14 the third rich man lacked sympathy. It was _15 that they themselves had been there to offer help.
However, three days later, they 16 the third rich man ,who was coming in the opposite direction . He was 17 travelling quickly, but his wagons, 18 the gold and valuables they had been 19 ,were now full of farming tools and bags of 20 .He was rushing back to help them out of poverty.

B．expectations

A．the villagers

B．his servants

A．turned back