单项选择题

From the third paragraph we know that ______.

A．an American team pointed a submillimeter telescope in Hawaii
B．the team used Hubble space Telescope and captured optical images of some galaxies
C．they found five faint old galaxies
D．there are several galaxies in the universe

<上一题目录下一题>

热门试题

单项选择题

The title Curtains Part on Ancient Star Nurseries means ______.

A．scientists use curtains when doing research on star birth
B．star birth still remains a complete mystery to us
C．scientists are uncovering the mystery of star birth
D．scientists are producing artificial stars in star nurseries

单项选择题

In Line 2 of the second paragraph it refers to ______.

A．interstellar dust
B．star birth
C．the infrared
D．the light of hot young stars