Here are some financial words and expressions used in business and the stock market. 

Our first expression is in the red. It is another way of saying that a business is losing money. In the past, numbers in the financial records of a company were written in red ink to show a loss. 

A profit by a business is written in black numbers. So a company that is in the black is making money. An international news service reported that a private health insurer in Australia announced it was back in the black with its first profit in three years.

Another financial expression is run on the bank （银行挤兑）. That is what happens when many people try to withdraw all their money from a bank. A run on the bank usually happens when people believe there is danger a bank may fail or close. 

"Day trading" （日交易） is a new  expression about system that lets investors trade directly on an electronic market system.  Day trading companies provide a desk and a computer system to an investor who wants to trade. Individuals must provide fifty thousand dollars or more to the trading company to pay for the stocks they buy. Thousands of other investors do day trading from computers in their homes.

A day trader watches stock prices carefully. When he sees a stock rise in price, he uses the computer to buy shares of the stock. If the stock continues to rise in price in the next few minutes, the day trader sells the shares quickly to make a small profit. Then he looks for another stock to buy. If a stock goes down instead of up, he sells it and accepts the loss.

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1.If a company is losing money, we can say it is ________.

A in the black

B on the bank

C in the red

D in its home

解析：选C。C 细节理解题。根据第2段可知答案，故选C。

2.What do black numbers in a business suggest?

A The business is getting worse.

B The business is getting better.

C The business is getting endangered.

D The business is getting closed.

解析：选B。B 推理判断题。根据第3段...a company that is in the black is making money...，可知黑字代表盈利，自然就表示公司向好的方向发展，故选B。

3.What does a run on the bank mean to a bank?

A Profits.

B Disasters.

C Shares.

D Stocks.

解析：选B。B 推理判断题。根据第4段可知，出现银行挤兑，是因为储户认为银行会面临失败或倒闭从而将所有钱从银行取出，这对于银行来说当然是灾难，故选B。

4.A day trading company makes its trade possible by the means of ________.

A markets

B desks

C systems

D computers

解析：选D。D 细节理解题。根据第5段...Day trading companies provide a desk and a computer system to an investor...，可知其交易是通过电脑完成的，故选D。

5. What can we infer from the last paragraph?

A One buys shares of a stock may make money or not.

B One buys shares of a stock will probably lose money.

C One buys shares of a stock should sell them quickly.

D One buys shares of a stock can hardly make profits.

解析：选A。A 推理判断题。根据最后1段段意可知，买股票会赚钱，也可能亏损，故选A。