_______ in a friendly way, their quarrel came to an end.
| A．Being settled | B．Settled |
| C．Settling | D．Having settled |
The silence of the library ______only by the sound of pages being turned over.
| A．had been broken | B．breaks |
| C．broke | D．was broken |
President Xi has advised young people to avoid staying up late, ______ heated response from Internet users on microblog.
| A．having drawn | B．drawing |
| C．to draw | D．Drawn |
Although nuclear power may lead to disasters, ______ the nuclear power industry has been operating safely for three decades in China.
| A．and | B．but | C．so | D．yet |
The way he acted towards people was to keep on good terms with them ______ principle, which was usually thought little of.
| A．at the mercy of | B．at the risk of |
| C．at the expense of | D．at the bottom of |
Loud music like hip hop can make a driver drive far more ______, braking harder and accelerating faster.
| A．aggressively | B．deliberately |
| C．tentatively | D．definitely |