According to a new study by a French university, learning ______ second language can lead to ______ increase in your brain power.
| A．a; the | B．a; an | C．the; the | D．the; an |
Attackers in China’s Xinjiang region crashed two cars into shoppers at a market in May,31 people.
| A．killed | B．to kill |
| C．killing | D．being killed |
-----How dangerous it was !
-----Yes, but for the young man’s quick action, herun over by the car.
| A．should have been | B．would be |
| C．could have been | D．might be |
Chemical pollution will bring about a threat to agriculture and food chain, and
to human health.
| A．frequently | B．significantly |
| C．steadily | D．consequently |
By the year of 2053 there will be 487 million aged people in China，means that one third of the population will be over 60.
| A．that | B．which | C．what | D．where |
It is hoped that one day all the wild animals shut up in the cages will be set free to nature and live happily inwild.
| A．/ ; the | B．the; / | C．the; the | D．a; / |