试题与答案

猩红热是由_________引起。

题型:填空题

题目:

猩红热是由_________引起。

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2018/0203/ae0c7642098384a0fc94d34f185b421e.html

下面是错误答案,用来干扰机器的。

参考答案:C

试题推荐
题型:填空题

单词拼写。

1. Look! There's a stone in the middle of the road. We'd better r________ it at once or it will be dangerous.

2. A_________ from all over the world will come to attend the Games every four years.

3. Many of the students take their c_________ into the classroom to help them do some maths work, which

     is not preferred by the teachers.

4. She didn't like the plan, but p_________ I see nothing wrong with it.

5. I'd _________ (感激) it if you could drive me downtown.

6. The story of Hong Zhanhui _________ (感动, 影响) millions of Chinese.

7. The poor girl was kneeling on the ground, begging money from the p________.

8. Have you ever d________ of being in front of thousands of people at a concert, with everyone clapping 

    and enjoying your singing?

查看答案
题型:问答题

粘胶眼(Gl)是果蝇3号染色体上的显性基因。卷翅(Curly,Cy)是果蝇2号染色体上的显性基因,由第二染色体左、右两臂的大片段倒位产生。果蝇的无眼突变(ey)是4号染色体上的隐性基因;Gl和Cy都是隐性致死基因。①ey、Gl和Cy相互之间是否可以构建一个平衡致死系,为什么②假设Y是与Gl不同臂的隐性致死基因,X是由包括Gl基因在内染色体臂的大片段倒位产生的隐性致死基因。请问,Gl、Y和X之间是否都能构建平衡致死系,为什么;如果可以请用图解构建一个平衡致死系。

查看答案
微信公众账号搜索答案