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【单选题】
理论上,λ噬菌体载体最大可以插入多大的外源片段?
A.
10-15kb
B.
25-30kb
C.
5-10kb
D.
50-100kb
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参考答案:
举一反三
【单选题】Some people claim that shopping on the Internet is not secure. They worry that their credit card details might be copied or that someone might steal money from their bank account. However, some people...
A.
with comparison and contrast
B.
with examples
C.
with cause-and-effect pattern
D.
with a combination ofexamples, comparison and contrast and cause-and-effect pattern.
【单选题】I think the street will be ____ , as many people go shopping during the holiday.
A.
crude
B.
crowd
C.
crowded
【简答题】I often travel on business. There are so many things to think about! I usually make a list and do things in that order, so I don't forget anything. First, I buy a ______ and ______ a hotel room. I try...
【单选题】-I hear people can pay for almost everything by ZHI FU BAO in China. -Actually, it’s __ that people often go shopping without taking any paper money.
A.
important
B.
impossible
C.
surprising
D.
necessary
【单选题】Robert Provine studied people and laughter. He discovered that people laugh when they want to be friendly. He watched people in the city walking and shopping. He found that 80 to 90 percent of laughte...
A.
Robert Provine studied people and laughter.
B.
He discovered that people laugh when they want to be friendly.
C.
He watched people in the city walking and shopping.
D.
He found that 80 to 90 percent of laughter came after sentences like “I know” or “I’ll see you later.”
E.
People didn’t laugh because someone said something funny.
F.
People laughed because they wanted to be friendly with each other.
【单选题】研究计算的一般性质的数学理论称之为( )。
A.
算法理论
B.
不可计算性理论
C.
能行性理论
D.
A和C
【简答题】Are you i n ter e ste d in name brand products? Why or why not? Where do you usually do shopping? Where do most young people like to go shopping now?
【简答题】小练笔。 Hello! My name is Alice. Today I go shopping with my mother. There are many people and cars on the street. I want to buy an ice cream. I walk across the street when the light is red. I want to ru...
【单选题】若要将窗体上背景图片的布局方式设置为“拉伸”,则需设置控件的Background -ImageLayout属性值为:
A.
Stretch
B.
Center
C.
Tile
D.
Zoom
【多选题】妊娠期消化系统的变化的叙述下列哪些是正确的( )
A.
易胆汁淤积,诱发胆石病
B.
常形成痔疮或使原有痔疮加重
C.
肝功能出现异常
D.
牙齿易松动,出现龋齿
E.
胃酸和胃蛋白酶分泌量增加
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