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【单选题】
书籍的参考文献格式 Only one of the following MLA works cited entries is handled correctly. Select the correct answer. The student has quoted from page 580 of The American Promise: A History of the United States, 2nd compact edition, written by James L. Roark, Michael P. Johnson, Patricia Cline Cohen, Sarah Stage, Alan Lawson, and Susan M. Hartmann and published in 2003 by Bedford/St. Martin’s in Boston.A.
Roark, James L. The American Promise: A History of the United States. 2nd compact ed. Boston: Bedford, 2003.
B.
Roark, James L., et al. The American Promise: A History of the United States. 2nd compact ed. Boston: Bedford, 2003.
C.
Roark, James L. The American Promise: A History of the United States. Boston: Bedford, 2003.
D.
Roark, James L., et al. The American Promise: A History of the United States. Boston: Bedford, 2003.
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【简答题】Form the sentences. 连词成句。 1. computer, I, play, on, like, to, the 2. desserts, they, different, have 3. for, your, what's, food, lunch, favourite. 4. juice, this, orang...
【简答题】已知集合M={1，1+m，1+2m}，N={1，n，n 2 }，（m，n∈R），若M=N，试求集合M．
【单选题】( 江苏高考 ) 如图是高产糖化酶菌株的育种过程,有关叙述错误的是 ( ) 出发菌株 X射线处理初筛 选出 50 株 复筛 ( ――→ ) 选出 5 株 X射线处理 ( ――→ ) 多轮重复筛选
A.
通过图中筛选过程获得的高产菌株未必能作为生产菌株
B.
X 射线处理既可以引起基因突变也可能导致染色体变异
C.
图中筛选高产菌株的过程是定向选择过程
D.
每轮诱变相关基因的突变率都会明显提高
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