The basic task of sequence alignment？
A. Finding the similarity between sequences;
B. Finding the common pattern between sequences;
C. Distinguish the differences between sequences;
D. Establishing residue–residue correspondence;
E. Finding the functional similarity between genes；
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The objective of sequence alignment？
A. Sequence similarity means similar structure and function;
B. predicting structure and function;
C. infer evolutionary relationships;
D. observe patterns of conservation and variability.
用最小平方法配合趋势线的数学依据是（）
A. ∑(Y-YC)=0
B. ∑(Y-YC)2=最小值
C. ∑(Y-YC)2=任意值
D. ∑(Y-YC)2=0
测定长期趋势的方法有（）
A. 时距扩大法
B. 移动平均法
C. 序时平均法
D. 分割平均法
E. 最小平方法
移动平均修匀时间数列，移动平均的时距越长，修匀数列项数比原数列越____。
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