______ the Hubble Space Telescope astronomers detected the two small faint moons orbitin

______ the Hubble Space Telescope, astronomers detected the two small, faint moons orbiting Pluto in the Kupier Belt.

A．To use

B．Using

C．Having used

D．Use

正确答案：B
解析：此题考查的是分词作状语，这里是-ing分词作方式状语。意为宇航员用哈勃望远镜观测到柯伊伯带环绕冥王星的两个卫星。