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【简答题】
For the buyer of a call option, the downside risk A. is unlimited, but upside potential is limited. B. is limited, but upside potential is unlimited. C. and upside potential are unlimited. D. and upside potential are limited.
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反馈参考答案：
举一反三
【简答题】基因工程是在现代生物学、化学和工程学基础上建立和发展起来的，并有赖于微生物学理论和技术的发展运用。基因工程基本操作流程如下图所示，请据图回答： 在上图基因工程的操作过程中，遵循碱基互补配对原则的步骤有（）。（用图中序号表示）。
【单选题】He has a good command ________ maths and plays an important part ________ our team.
A.
about; in
B.
of; to
C.
to; about
D.
of; in
【简答题】基因工程的操作流程是什么?
【简答题】He has good team spirit, being able to work with any type of people. (翻译)
【简答题】什么是记账凭证核算组织程序?
【单选题】_______he is good at playing basketball, he failed to join the school basketball team yesterday.
A.
Since
B.
Unless
C.
Though
D.
Because
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