1.选择题- (共4题)
2.催生基因工程的三大基础理论为( )。
①DNA是遗传物质的证明 ②工具酶的发现 ③DNA双螺旋结构和中心法则的确立④重组DNA表达实验的成功 ⑤遗传密码的破译 ⑥第一例转基因动物的问世 ⑦PCR技术的发明⑧DNA测序技术的发明 ⑨质粒功能的发现
①DNA是遗传物质的证明 ②工具酶的发现 ③DNA双螺旋结构和中心法则的确立④重组DNA表达实验的成功 ⑤遗传密码的破译 ⑥第一例转基因动物的问世 ⑦PCR技术的发明⑧DNA测序技术的发明 ⑨质粒功能的发现
( )
2.单项选择- (共7题)
5.
The success of holding the 2008 Olympic Games is ______ great pleasure and encouragement to _______ Chinese people.
The success of holding the 2008 Olympic Games is ______ great pleasure and encouragement to _______ Chinese people.
| A．the; the | B．a; a | C．a; the | D．/; a |
7.
He apologized for ______ to inform me of the change in the plan.
He apologized for ______ to inform me of the change in the plan.
| A．his being not able | B．him not to be able |
| C．his not being able | D．him to be not able |
8.
The sports meet the following week is very important.
The sports meet the following week is very important.
| A．holding | B．being held | C．to be held | D．held |
9.
---It’s raining heavily. The plane may be put off.
---I am told it will take off _______ the weather.
---It’s raining heavily. The plane may be put off.
---I am told it will take off _______ the weather.
| A．regardless of | B．because of | C．thanks to | D．due to |
10.
—You seem to have known Dr. Ken for a long time.
—That’s true. ________ he joined our club years ago.
—You seem to have known Dr. Ken for a long time.
—That’s true. ________ he joined our club years ago.
| A．Since | B．Until | C．When | D．If |
试卷分析
-
【1】题量占比
选择题:(4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：0
7星难题：0
8星难题：7
9星难题：0