Over the past decades, sea ice _____ in the Arctic as a result of global warming.
| A．had decreased | B．decreased | C．has been decreasing | D．is decreasing |
I don’t think the risk they took ______ the poisonous snake is worthwhile.
| A． being caught | B． of catching | C． caught | D． to be caught |
I’m sure that you will love our new best-seller, ______ you can read some good short stories in simple English.
| A． one | B． where | C． that | D． which |
--- ______ I call him back since you are in such poor health?
--- No, you needn’t. I’d rather he ______ disturbed.
| A． May; shouldn’t be | B． Shall; weren’t |
| C． Should; hadn’t been | D． Shall; wasn’t |
According to Li Shangfu, ______ director of the Xichang Satellite Launch Center, ______ launch of China’s first lunar probe Chang’e-1 was ______ success.
| A． a; /; the | B． the; the; / | C． /; the; a | D． /; a; a |
This, I think, ___ the first time that we ___ traveling together. Would you like to join us?
| A． has been; has gone | B． was; had gone |
| C． will be; are going | D． would have been; would go |