The number of the employees has grown from 1,000 to 1,200. This means it has risen ____20 percent.
| A．by | B．at | C．to | D．with |
________ he is ,he seldom shows his precious coins to others.
| A．Coin -collector as | B．As a coin -collector |
| C．A coin- collector as | D．Coin- collector that |
________ all over the hills and around the lake are wild flowers of different kinds.
| A．To grow | B．Growing | C．Grown | D．Grow |
Apples are usually sold by ________ weight and eggs are sometimes sold by ________ dozen.
| A．the; the | B．/;a |
| C．/; the | D．the; a |
I think that this meal was well worth ________ was charged for it.
| A．that | B．what | C．which | D．how many |
—The experiment is of particular importance.
—I see. We will carry on with it ________ we can get enough money.
| A．unless | B．though | C．whether | D．until |