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问题 选择题

“毒胶囊”事件引起了全社会对药物安全的关注，下列有关安全用药的常识正确的是

A．不再服用胶囊药物

B．对青霉素过敏的同学可以服用青霉素

C．生病马上服用抗生素

D．感到身体不舒服，首先应该去医院，由医生对症下药

答案

答案：D

因为药物具有一定的毒副作用，所以不能随便用药，当感到身体不舒服，首先应该去医院，由医生对症下药。

解答题

已知集合A={x|x2-4ax+2a+6=0，x∈R}，集合B={x|x＜0}，若A∩B≠∅，求实数a的取值范围．
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填空题



In the early 1970’s, Citibank of New York City became one of the first financial institutions to install ATM’s on a large scale. Since then, the (1) of automated teller machines has increased dramatically. At the time, the bank hoped (2) their operating costs by replacing human tellers with machines. Little did they (3) that the cash machines would become so successful. However, as more banks added (4) automated service through ATM’s, the machines mushroomed all over the world.
To use an ATM, all you need is a (5) issued by your bank. Your bank may also (6) through a credit card, such as MasterCard or Visa. To begin a (7) , you need to insert the card into an ATM and punch in a personal identification number on the (8) . The personal ID number may consist of (9) and can prevent anyone from using the card.
The ATM next flashes instructions on its (10) for carrying out transaction. To get cash, for example, you are instructed to (11) that indicate whether the money should be withdrawn from a checking or a savings account and the (12) . This request is then displayed on the screen. After you press a button to (13) that the information is correct, the ATM goes to (14) .
How safe, you may ask, is banking by ATM The (15) is meant to prevent anyone, no matter who you are, from using a cash card (16) . If you enter the wrong ID number for a card, a message on the screen will (17) . If you fail to produce the correct number for three times, most machines will (18) .As another precaution against (19) , the bank generally limits the amount that may be withdrawn by cash card (20) , say, to $ 200.
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