Scientists study _______to understand solar activity.
observatory
telescope
sunspots
Which one means "天文望远镜"?
Telegram
Binocular
Telescope
The new research represents a significant _______ in medical science.
observatory
breakthrough
appearance
Which one means "磁场"?
Geomagnetic
Magnetic field
Atmosphere
Good ______ is essential for many daily activities.
symbol
intelligence
vision
The city's _____ is evident in its luxurious neighborhoods.
affluence
purchase
affordable
Which word is the synonym for "Inexpensive"?
Affluence
Affordable
Purchase
The dove is often seen as a _____ of peace.
symbol
vision
status
_______ rates have improved significantly over the years.
Intelligence
Literacy
Affluence
