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【单选题】 Where do they often exercise?
A.
In the school playground.
B.
In the gymnasium.
C.
Go to the local sport center.
D.
In a fitness club with personal training services 手机使用 分享 复制链接 新浪微博 分享QQ 微信扫一扫 反馈 收藏 【单选题】下列说法错误的是:()
A.

B.

C.

D.

【单选题】关于枚举定义说法正确的是：
A.

B.

C.

D.

【单选题】$\lim_{x\to 0} \, \frac{2 x+3}{x+1}$
A.
2
B.
3
C.
$\frac{1}{2}$
D.
$\frac{1}{3}$
【单选题】$\lim_{n \to \infty } (\frac{2}{3})^n$
A.
1
B.
0
C.
$\infty$
D. 【单选题】下列说法错误的是:()
A.

B.

C.

D.

【单选题】关于枚举定义说法正确的是：
A.

B.

C.

D.

【单选题】$\lim_{x\to 0} \, \frac{2 x+3}{x+1}$
A.
2
B.
3
C.
$\frac{1}{2}$
D.
$\frac{1}{3}$
【单选题】$\lim_{n \to \infty } (\frac{2}{3})^n$
A.
1
B.
0
C.
$\infty$
D.
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