2. Let the 20 vertices of a regular 20-sided polygon inscribed in the unit circle in the complex plane correspond to the complex numbers $z_{1}, z_{2}, \cdots, z_{20}$. Then the number of different points corresponding to the complex numbers $z_{1}^{1995}$, $z_{2}^{1905}, \cdots, z_{20}^{1195}$ is ( ).
(A) 4
(B) 5
(C) 10
(D) 20
2. (A).

Let $z_{1}=\cos \theta+i \sin \theta$, then
$$
\begin{aligned}
z_{t}= & (\cos \theta+i \sin \theta)\left(\cos \frac{2(k-1) \pi}{20}\right. \\
& \left.+i \sin \frac{2(k-1) \pi}{20}\right), 1 \leqslant k \leqslant 20 .
\end{aligned}
$$

From $1995=20 \times 99+15$, we get
$$
\begin{aligned}
z k^{995}= & (\cos 1995 \theta+i \sin 1995 \theta) \\
& \left(\cos \frac{3 \pi}{2}+i \sin \frac{3 \pi}{2}\right)^{k-1} \\
= & (\cos 1995 \theta+i \sin 1995 \theta)(-i)^{k-1},
\end{aligned}
$$
$k=1,2, \cdots, 20$. There are four different values.