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【单选题】
需经蒸罐处理后再粉碎的药物有
A.
含有大量黏性成分的药料
B.
含有大量油脂性成分的药料
C.
含有大量贵重细料的药料
D.
含有动物的皮、肉、筋骨的药料
E.
含有大量粉性成分的药料
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A.
为教师的演示教学提供新的方式
B.
扩大和紧密英语学习的共同体
C.
促进学生主动构建的英语学习
D.
创设英语学习环境
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【单选题】下述程序的输出结果是( )。 #include <stdio.h> int f(n) int n { if(n==0 | | n==1) return 3 return n-f(n-2) } void main() {printf('/n%d',f(10)) }
A.
3
B.
8
C.
9
D.
10
【简答题】已知等差数列{a n }为递增数列,满足 a 3 2 =5 a 1 +5 a 5 -25 ,在等比数列{b n }中,b 3 =a 2 +2,b 4 =a 3 +5,b 5 =a 4 +13. (Ⅰ)求数列{b n }的通项公式b n ; (Ⅱ)若数列{b n }的前n项和为S n ,求证:数列{ S n + 5 4 }是等比数列.
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A.
0000
B.
1221
C.
1209
D.
2109
【单选题】I have a friend who the piano very well.
A.
play
B.
playing
C.
plays
D.
played
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