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【单选题】
Why do the black people imitate the dancing steps of their masters?
A.
To mock their masters.
B.
To show their respect.
C.
To learn new dance steps.
D.
To fit into a new cultur
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参考答案:
举一反三
【简答题】The edge of the wise over the unwise lies in their tendency to __________ about the purpose of their life.
【单选题】下列属于蛋白质三级结构特点的是 ( )
A.
无规线团
B.
疏水区朝分子内部
C.
肽键平面
D.
血红蛋白的4个亚基间有8条盐键
【单选题】下列属于蛋白质三级结构的是:
A.
α-螺旋
B.
Β-折叠
C.
亮氨酸拉链
D.
结构域
【判断题】α,β-不饱和醛中,由于羰基氧的吸电子作用在共轭体系内传递,使β-碳也带部分正电荷,因此,亲核试剂既可进攻羰基碳,发生1,2-加成,也可进攻 β-碳,发生1,4-加成。
A.
正确
B.
错误
【单选题】下列结构中,属于蛋白质三级结构的是
A.
β折叠
B.
结构域
C.
无规则卷曲
D.
锌指结构
E.
亚基构象
【单选题】About the tendency of food in America, which of the following ones is NOT true?
A.
quicker
B.
tastier
C.
cheaper
D.
Smaller
【简答题】Dictation.mp3: Professors (1)______ outside of the classroom, (2)________ . A professor (3)________ but (4)______ for(5)______ . The professor (6)_______ but (7)_______. Professors (8)__________; th...
【单选题】临时性填方边坡,当填方的高度在10m以内,可采用的边坡坡度为
A.
1:0.33
B.
1:0.25
C.
1:1
D.
1:1.5
【单选题】When did the conversation take place?
A.
At about five o'clock.
B.
At about nine o'clock.
C.
At about ten o'clock.
D.
At about eleven o'clock.
【简答题】Dictation-U11-2.mp3: Take(1)______. Mentally (2)______. Instead of (3)______, learn to look for the love, (4)______. Try (5)_______. If (6)_______, you may realize that (7)_______, fear —even lov...
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