皮皮学,免费搜题
登录
搜题
【简答题】
We know the mosquito very well. Mosquitoes fly everywhere. They can be found almost all over the world, and there are more than 2,500 kinds of them. No one likes the mosquito. But the mosquito may decide that she loves you. She? Yes, she. It’s true that male mosquito doesn’t bite( 咬 ) and only the female mosquito bites because she needs blood to lay eggs. She is always looking for things or people she wants to bite. If she likes what she finds, she bites. But if she doesn’t like your blood, she will turn to someone else for more delicious blood. Next time a mosquito bites you, just remember you are chosen. You’re different from the others! If the mosquito likes you, she lands on your body without letting you know. She bites you so quickly and quietly that you may not feel anything different. After she bites, you will have an itch( 痒 ) on your body because she puts something from her mouth together with your blood. By the time the itching begins, and she has flown away. And then what happens? Well, after her delicious dinner, the mosquito feels tired. She just wants to find a place to have a good rest. There, on a leaf or a wall, she begins to lay eggs, hundreds of eggs.
拍照语音搜题,微信中搜索"皮皮学"使用
参考答案:
参考解析:
知识点:
.
..
皮皮学刷刷变学霸
举一反三
【简答题】下面是某个高等动物体内细胞分裂的示意图,右面的曲线图表示该动物细胞中一条染色体上DNA的含量变化。分析回答: (1)该动物体细胞内有染色体_______条。表示细胞有丝分裂的图是________。 (2)经有丝分裂产生的子细胞具有与亲代细胞相同数目、相同形态的染色体,其原因是染色体完成_____ 后,精确地平均分配到两个子细胞中。 (3)在曲线图中,a~b段DNA含量发生变化的原因是在间期完成了_...
【单选题】属于大腿前群肌的是
A.
股二头肌
B.
股四头肌
C.
臀大肌
D.
梨状肌
【判断题】1949 年中华人民共和国成立,标志着社会主义制度在中国的确立。
A.
正确
B.
错误
【简答题】大伯虞仲,大王之昭也。昭:( )
【单选题】若某动物细胞内有三对同源染色体,分别用A和a、B和b、C和c表示。下列各组精子中由同一个精原细胞经减数分裂形成的是 [     ]
A.
aBC、aBC、abc、abc
B.
ABC、aBc、aBc、ABC
C.
ABC、Abc、aBC、abc
D.
ABC、abc、abc、ABC
【判断题】出库频繁的商品,应储存在库房深处或多层仓库的楼上。
A.
正确
B.
错误
【多选题】氢在焊缝金属中的溶解度与( )有关。
A.
温度
B.
晶体结构
C.
固液状态
D.
氢的分压
【单选题】属于大腿前群肌的是
A.
缝匠肌
B.
股二头肌
C.
耻骨肌
D.
长收肌
E.
短收肌
【判断题】收入水平越高,对货币的需要量就越多。( )
A.
正确
B.
错误
【单选题】滑木箱底座的基本构件包括()
A.
滑木、辅助滑木、端木、底板
B.
滑木、辅助滑木、枕木、底板
C.
滑木、辅助滑木、枕木、端木
D.
滑木、辅助滑木、枕木、端木、底板
相关题目: