The population problem may be ___ one of the world today.
| A．the most |
| B．most difficult |
| C．the greatest |
| D．more interesting |
The Chinese abacus(算盘), officially ______ as a cultural heritage at the 8th Annual UNESCO World Heritage Congress, is another symbol of Chinese wisdom.
| A．having listed | B．listed | C．having been listed | D．listing |
— Tom seems not so enthusiastic as he was two years ago.
— Yes. He’s really reached a point in his career ______ he has to decide what to do next.
| A．that | B．when | C．where | D．which |
—Daddy, which of these smart kids do you like best in last night’s TV show?
— ________ . They are all proud and selfish.
| A．Either | B．Nothing | C．Neither | D．None |
Guangzhou Evergrande has raised China's hunger for soccer glory ever since the year 2013 ______ a series of its victories over other teams in and abroad China.
| A．saw | B．bid | C．had seen | D．had bid |
The Roman alphabet is a Greek invention, ______ is the marathon, a long distance race created in honour of a Greek soldier.
| A．which | B．what | C．that | D．as |