China's first regional regulation on online sales issued in Hangzhou, which is home to a number of China's e-commerce heavyweights such as Alibaba, will take _ effect on May l．
| A．the; \ | B．\;an | C．\, \ | D．a; the |
There is an obvious __________ between the cultures of the West and East.
| A．content | B．contrast |
| C．contract | D．contact |
We have strong __________ for believing that the mine accident in Heilongjiang was due to the poor management.
| A．grounds | B．reason |
| C．cause | D．purpose |
—Hey, dear! Guess what? I’ve got a pay rise!
—This ________ a celebration! Let’s go to sing karaoke tonight.
| A．calls for | B．works out |
| C．brings about | D．pays for |
I’m terribly sorry to turn you down this time, but I promise I will ________ to you next time.
| A．pick it up | B．make it up |
| C．turn it up | D．set it up |
The moment we heard the news of the earthquake, we began to ________ the work to rescue those who were trapped in the building.
| A．set off | B．set down |
| C．set aside | D．set about |