因为在减数分裂I中,同源染色体成对随机地排列在中期赤道板上,所以通常不同染色体上的基因相互独立地进入配子。
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It's always difficult to be in a foreign country,______if you don't speak the language.
A. extremely
B. naturally
C. basically
D. especially
You should make it a rule to leave things______you can find them.
A. when
B. where
C. then
D. there
Suppose it is September 14th today, how many activities can people choose to attend?
A. 2.
B. 3.
C. 4
D. 5
______could be judged from his eyes, he felt terribly sorry for what he had done.
A. Which
B. That
C. As
D. It