1.选择题- (共3题)
3.对下列有关遗传和变异的说法评判正确的是：
①基因型为Dd的豌
豆在进行减数分裂时，产生的雌雄两种配子的数量比是1：1
②基因自由组合定律的实质是：在F1产生配子时，等位基因分离，非等位基因自由组合。
③遗传学上把信使RNA上相邻的三个碱基称之为一个密码子
④染色体中DNA脱氧核苷酸数量、种类和序列三者中有一个发生改变就会引起染色体变异。
①基因型为Dd的豌
豆在进行减数分裂时，产生的雌雄两种配子的数量比是1：1 ②基因自由组合定律的实质是：在F1产生配子时，等位基因分离，非等位基因自由组合。
③遗传学上把信使RNA上相邻的三个碱基称之为一个密码子
④染色体中DNA脱氧核苷酸数量、种类和序列三者中有一个发生改变就会引起染色体变异。
2.单项选择- (共7题)
4.
The biggest whale is ________ blue whale，which grows to be about 29 meters long—the height of ________ 9story building.
| A．the；the | B．a；a | C．a；the | D．the；a |
5.
______ twice, the postman refused to deliver our letters unless we chained our dog.
| A．Being bitten | B．Bitten | C．Having bitten | D．To be bitten |
6.
For breakfast he only drinks juice from fresh fruit________on his own farm.
| A．grown | B．being grown |
| C．to ge grown | D．to grow |
7.
Scientists have many theories about how the universe into being.
| A．came | B．was coming | C．had come | D．would come |
8.
When I talked with my grandma on the phone, she sounded weak, but by the time we ______ up , her voice had been full of life.
| A．were hanging | B．had hung | C．hung | D．would hang |
9.
The way the guests ___ in the hotel influenced their evaluation of the service.
| A．treated |
| B．were treated |
| C．would treat |
| D．would be treated |
试卷分析
-
【1】题量占比
选择题:(3道)
单项选择:(7道)
-
【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：7
7星难题：0
8星难题：0
9星难题：0