1.综合题- (共1题)
（1）春季雄蛙在水边高声鸣叫，雌蛙闻声赶来，这是________行为。
（2）雌蛙和雄蛙抱对，雌蛙先将_______排到水中，雄蛙也将_______排入水中，然后在水中结合形成_________完成________作用，其受精方式为____________。像这样经过两性生殖细胞相结合的生殖方式叫____________。
（3）青蛙的发育起点是[ ]_________，经过________、________阶段，最后发育成________，其发育特点属于___________。
2.单选题- (共12题)
| A．体内受精，体外发育 |
| B．所有的鸟类都具有筑巢、孵卵、育雏等行为 |
| C．鸡、鸭、鹅、燕子属于早成雏 |
| D．晚成雏的亲鸟在育雏阶段能消灭大量的农林害虫 |
①蝗虫的发育包括受精卵、幼虫和成虫三个时期
②果蝇的发育过程属于完全变态发育
③青蛙的生殖和发育都离不开水
④青蛙的发育包括受精卵、蝌蚪、成蛙三个发育时期
⑤哺乳动物生殖发育的特点是胎生哺乳
| A．①②④⑤ | B．②③④⑤ | C．①②④⑤ | D．①②③⑤ |
| A．在环境适宜时，嫁接的桃树枝条会成活 |
| B．将秋海棠的叶子放在适宜的环境中会萌发长出新植物体 |
| C．玉米种子播种到土壤中，会萌发长出新的植物体 |
| D．将带芽的马铃薯播种在土壤中，会萌发长出新的植物体 |
3.选择题- (共3题)
Mr Brown was going away for a week. Before he left, he said to his son, "if anyone asks for me, you can tell him that your father has been out for doing something, and will be back in a week, then be sure to ask him to sit down for a cup of tea."
"OK, Dad," said his son. But he was afraid his son couldn’t remember this, he wrote these words down on a piece of paper and gave it to him. His son put it into his small pocket, took it out and looked at it every now and then.
Four days passed, but no one came to see his father. The boy thought that there was no man to come and that the piece of paper was of no more use for him, so he burnt it that evening.
The next afternoon, someone knocked at the door. The boy opened it. A man was standing at the door and said, "Where is your father?" The boy put his hand into his pocket at once and looked for the piece of paper. He could not find it. He suddenly remembered he had burnt it, so he shouted, "No more."
The man was very surprised. He asked, "No more? I met your father last week. When did it happen?"
"Burnt yesterday evening."
4.填空题- (共1题)
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【1】题量占比
综合题:(1道)
单选题:(12道)
选择题:(3道)
填空题:(1道)
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【2】：难度分析
1星难题：0
2星难题：0
3星难题：0
4星难题：0
5星难题：0
6星难题：10
7星难题：0
8星难题：3
9星难题：1