Sunglasses are sometimes worn to the eyes strong sunlight.
| A．prevent; from | B．care; of | C．defend; against | D．protect; from |
Even if she brushed the old pot __________, she could not make it completely clean, which made her upset.
| A．firmly | B．steadily | C．roughly | D．thoroughly |
The number of college students who attended national examination for admissions to the civil service in 2013 reached 1,117,000, a (n) ________ of one million per year in the recent three years.
| A．average | B．number | C．amount | D．quantity |
—What are you busy with recently?
—We have been looking into how the machine breakdown __________.
| A．came out | B．came about | C．came down | D．came up |
If an artist is enthusiastic and has great courage to overcome difficulty, inspirations of his art will never __________.
| A．break out | B．work out | C．run out | D．put out |
Drinking coffee, having healthy foods and taking exercise are all good ways to ______ you when you are working to a tight schedule.
| A．tend | B．handle | C．refresh | D．concentrate |