The millionaire insisted that he _____________ (invest) money in shares, mines and railways.

Coal mines are ugly, and their (develop)________________ has a serious effect on animal and plant life.

中国大学MOOC: The millionaire insisted that he (invest) money in shares, mines and railways.

The front loading machine can be used as the main mining and loading equipment in large open pit mines.

The hillside open mines's ramp usually adopts the inversion type or the combined type of direct feed and inversion.

Here are the main points for a speech trying to convince the audience that China needs stricter law enforcement against underfunding and negligence of coal mines. I. Many coal mine accidents in China result from underfunding and negligence. II. Stricter safety law enforcement will help prevent underfunding and negligence of China’s coal mines. These main points are arranged in __________ order.

The hillside open mines's ramp usually adopts the inversion type or the combined type of direct feed and inversion. A: 正确 B: 错误

In the article Taking Your Fun, the author has told us that upon every side of us are to be found what one has happily called--unworked joy mines. 答

It can be inferred from the passage that, before the Progressive Movement, educated women of the middle class were expected to （） A: stay out of politics B: vote on municipal issues only C: pay a tax in order to vote D: improve conditions in mills and mines