9. The Hulk's distance for each jump is twice the distance of the previous jump. If the first jump is 1 meter, then the second jump is 2 meters, the third jump is 4 meters, and so on. When he first jumps more than 1 kilometer, it is his ( )th jump.
(A) 9
(B) 10
(C) 11
(D) 12
(E) 13
9. C.

It is known that the distance of each jump of the Hulk forms a geometric sequence, i.e., $a_{n}=2^{n-1}\left(n \in \mathbf{Z}_{+}\right)$.
$$
\begin{array}{l}
\text { and } a_{10}=2^{9}=5121000,
\end{array}
$$

Therefore, when he first jumps over 1 kilometer, it is on the 11th jump.