皮皮学，免费搜题
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【单选题】
一个酶作用于多种底物时,其天然底物的Km值应该是A.
最大
B.
与其他底物相同
C.
最小
D.
居中间
E.
与Ks相同
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皮皮学刷刷变学霸
举一反三
【简答题】o____ ( adj.) 普通的,平常的
【单选题】Teachers could encourage students to use __________ to gather and organize their ideas for writing.
A.
eliciting
B.
mind mapping
C.
explaining
D.
brainstorming
【简答题】已知动点M到定点F（1，0）的距离与到定直线l：x=-1的距离相等，点C在直线上。 （1）求动点M的轨迹方程； （2）设过定点F，法向量 =（4，-3）的直线与（1）中的轨迹相交于A，B两点，判断 能否为钝角并说明理由。
【简答题】普通的; 平常的; 一般的; 平凡的; 平庸的; 平淡无奇的
【单选题】— Could you do me a favor to take these books to the teachers’ office? —________.
A.
With pleasure
B.
That’s very kind of you
C.
Good idea
D.
Yes, that’s right
【单选题】Parents' Homework: Find Perfect Teachers for Kids Tomi Hall did what she could to lobby for the best teachers for her two children, making her case this spring in letters to the principal. Then all sh...
A.
they are used to directing nearly all aspects of their child
B.
they are used to spending hours crafting the perfect letter
C.
they consider their decision is critical
D.
they consider the teacher is critical
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