1.选择题- (共12题)
10.在基因表达载体的构建中，下列说法正确的是（ ）
①表达载体组成至少包括目的基因、标记基因、启动子、终止子
②有了启动子才能驱动基因转录出mRNA
③基因表达载体的构建是基因工程核心步骤
④终止子的作用是使转录在所需要的地方停止．
2.单项选择- (共10题)
13.
From the top of Mount Tai you can get a particularly wonderful _____ of sunrise.
| A．scenery | B．sight | C．view | D．scene |
14.
I didn’t really want a wallet, but the salesman persuaded me to buy______.
| A．it | B．one | C．another | D．the other |
15.
To Jim’s disappointment, _____ phone he bought yesterday is out of _____ order now.
| A．the; the | B．the；不填 | C．a; the | D．a; 不填 |
16.
It is requested that the reporter ________ to blame for the wrong report.
| A．referring to | B．referring to as |
| C．referred to be | D．referred to being |
17.
We do have trained people, but the problem is how to organize them, and ____their enthusiasm.
| A．raise | B．arouse | C．rise | D．arise |
18.
—What is the model plane like?
－Well, the wings of the plane are of its body.
－Well, the wings of the plane are of its body.
| A．more than the length twice | B．twice more than the length |
| C．more than twice the length | D．more twice than the length |
19.
--- Lucy seems in low spirits.
--- Yes, all her efforts were ____ and no one was interested in her invention.
--- Yes, all her efforts were ____ and no one was interested in her invention.
| A．in need | B．in vain | C．in place | D．in use |
20.
In the past few months, the country _____ a further tightening of supply restrictions, making fuel and food supplies more difficult to obtain.
| A．would witness | B．witnesses | C．has witnessed | D．had witnessed |
21.
Not until he promised to return it to me as soon as possible ____ my electronic dictionary to my classmate.
| A．had I lent | B．did I lend |
| C．I had lent | D．I lent |
试卷分析
-
【1】题量占比
选择题:(12道)
单项选择:(10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：1
5星难题：0
6星难题：9
7星难题：0
8星难题：0
9星难题：0