下列计算正确的是[ ] A、3a+2b=5ab B、（a3）2=a5 C、（-a

患者男性，60岁，因“乏力1年，加重1个月”来诊。患者1年前，曾出现乏力、心悸、头晕，活动后为著，逐渐出现食欲减退、恶心、腹痛、腹泻、发热、偏食、黑便、消瘦等。实验室检查：血白细胞6.3×10⁹/L，嗜酸粒细胞0.056，血红蛋白40g/L，血红细胞2.11×10¹²/L，红细胞平均体积73.0fL，红细胞平均血红蛋白含量19.0pg，红细胞平均血红蛋白质量浓度260g/L，血小板283×10⁹/L，网织红细胞0.037，铁蛋白3.62μg/L，血清铁2.7μmol/L（正常值：7～32μmol/L）。胃镜示慢性胃炎，骨髓穿刺示缺铁性贫血，钩虫检查阳性。

缺铁性贫血（IDA）的因素有（）

A.消化性溃疡

B.慢性腹泻

C.月经过多

D.钩虫病

E.痔疮

F.胃大部分切除

G.抑酸剂以及H₂受体拮抗剂

H.胃酸缺乏

从房地产开发投资项目看，现金流入包括（）。

A.出租收入

B.利息收入

C.销售收入

D.有效毛收入

E.税金

(1).双花草珊瑚含片的用法为（）
(2).丁香风油精的用法为（）
(3).熟三七片的用法为（）
(4).龙牡壮骨冲剂的用法为（）

A．外用 

B．含服 

C．口服 

D．冲服

胃大部切除术后早期并发症是

A．碱性反流性胃炎
B．胃排空延迟
C．吻合口溃疡
D．残胃癌
E．贫血

Bells sound. Lighted messages appear. Men and women work at computers. They talk on the telephone. At times they shout and run around.

This noisy place is a stock exchange (证券交易所). Here expert salespeople called brokers buy and sell shares(股份) of companies. The shares are known as stocks. People who own stock in a company own part of that company.

People pay brokers to buy and sell stocks for them. If a company earns money, its stock increases in value. If the company does not earn money, the stock decreases in value. Brokers and investors(投资者)carefully watch for any changes on the Big Board. That is the name given to a list of stocks sold on the New York Stock Exchange.

Investors and brokers watch the Big Board to see if the stock market is a bull market or a bear market. In a bear market, prices go down. In a bull market, prices go up.

Investors in a bear market promise to sell a stock in the future at a set price. But the investor does not own the stock yet. He or she waits to buy it when the price drops.

The meaning of a bear market is thought to come from an old story about a man who sold the skin of a bear before he caught the bear. An English dictionary of the sixteen hundreds said, to sell a bear is to sell what one has not.

Word experts dispute the beginnings of the word bull in the stock market. But some say it came from the long connection of the two animals – bulls and bears – in sports that were popular years ago in England.

Investors always care about the possibility of a company failing. In the modern world, a company that does not earn enough profit (利润)is said to go belly up. A company that goes belly up dies like a fish. Fish turn over on their backs when they die. So they are stomach, or belly up.

Stock market investors do not want that to happen to a company. They want a company whose stock they own to earn more profit than expected. This would sharply increase the value of the stock. Investors are hoping for a windfall(横财).

72. The first paragraph is written for the purpose of ________.

A. making readers interested in buying stocks

B. telling readers the place is so busy

C. telling readers people in the stock exchange are busy

D. attracting readers’ attention to the topic of the passage

73. A fresher of a stock market probably turns to a (n) _______ for advice.

A. company                                 B. investor

C. broker                                   D. word expert

74. John bought his stock from a company which has gone belly up this year. We can infer _________ .

A. John would lose money this year

B. John would earn money this year

C. the stock market is a bear market

D. the stock market is a bull market

75. The reason why investors pay attention to the company whose stock they own is that _______ .

A. the company belongs to them

B. the company earns much money

C. they work for the company

D. they are financially connected with the company