After the new type of rice was introduced, the farmers produced _______ rice this year as last year.
| A．as twice much as | B．twice as much as |
| C．twice much as | D．twice as much |
Kelly gave me a vivid ________ of her trip to Mount Tai after her return.
| A．explanation | B．account |
| C．imagination | D．idea |
Nowadays，few people form the habit of keeping a supply of candles in the house in case of power ________.
| A．drop | B．lack | C．absence | D．failure |
—Could you tell me the way to ________ Johnsons，please?
—Sorry，we don't have ________ Johnson here in the village.
| A．the；the | B．the；a | C．/；the | D．the；/ |
________ material used for running tracks in schools across China may be ________ danger to children's health.
| A．/；a | B．The；a | C．/；the | D．The；the |
I sent a big bunch of flowers to the nurse as an ________ of thanks for her taking good care of my grandpa in the nursing home.
| A．attitude | B．impression |
| C．appreciation | D．expression |