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【单选题】
鸡的k基因是伴性遗传的隐性致死基因。含k基因的杂合子雄鸡与正常的雌鸡交配，共孵化出120只小鸡。请问这120只鸡中雌雄的比例是（ ）（提示：鸡的性别决定为ZW型）。A.
雄：雌=80：40
B.
雌：雄=80：40
C.
雌：雄=60：60
D.
雌：雄=100：20
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【简答题】refers to the return of 84% of the energy radiated from the suce of the earth.
【简答题】用户创建文件或目录时,文件或目录的默认权限由______来确定。
【简答题】refers to the return of 84% of the energy radiated from the suce of the earth.(Green Chemistry/ Global Greenhouse Effect)
【单选题】（）refers to the tendency of a body of the ship to return to its original position after it is displaced therefrom.
A.
Stability
B.
Responsibility
C.
Liability
D.
Visibility
【单选题】听力原文： No one wants to look silly or do the wrong thing at a 'new job. It is important to make the right impression—not the wrong one—from the very first day. You will face new people. You will be in a...
A.
They will help you to be promoted quickly.
B.
They won't blame you if you can't work well.
C.
They can answer your questions when the boss is not around you.
D.
They can make you get a high salary.
【判断题】According to Edward T. Hall, communication is very important today, so make sure you know not only what to say, but also how to say it.
A.
正确
B.
错误
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