Experts say walking is one of the best ways for a person to _____ healthy.
| A．preserve | B．stay | C．maintain | D．reserve |
Eating too much fat can __________ to heart disease and high blood pressure.
| A．devote | B．attend |
| C．contribute | D．turn |
Due to the unreasonable individual income __________，the gap between the rich and poor has become an outstanding issue.
| A．contribution | B．association |
| C．accommodation | D．distribution |
He contributed an article __________ China Daily.
| A．for | B．about | C．on | D．to |
Thomas Alva Edison was __________ American inventor and __________ businessman who developed many devices, such as __________ bulb, that greatly influence life worldwide.
| A．the; a; the | B．an; a; / |
| C．an; /；the | D．an; the; / |
I am quite __________ that the new cosmetics, whether it appears in the form of tablet, capsule, powder or injection, will __________ through the country among young ladies.
| A．optimistic about; sweep | B．optimistic; sweep |
| C．pessimistic; spread | D．pessimistic about; spread |