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问题 选择题

2012年，科学家根据植物的光合作用原理，研制成第一片“人造树叶”。这片“树叶”能够释放出制作燃料电池的氢，它的诞生对于人类开发可再生能源具有重要意义。“人造树叶”的成功研制佐证了

①人的意识只有反映了事物本质才具有能动性、创造性

②人能够认识事物的本质并根据自身需要加以利用

③人的意识能够创造出自然界所没有的客观事物

④人能够通过实践将观念中改造的对象变成现实的东西

A．①②

B．①③

C．②④

D．③④

答案

答案：C

题目分析：“人造树叶”的研制成功，是科学家发挥意识的能动作用的产物，说明人能够认识事物的本质并根据自身需要加以利用，①错误，②正确；意识中的东西只有经过实践才能变为现实的存在，③错误，④正确。该题选C。

选择题

在溶液中能大量共存并且溶液为无色透明的离子组是

A．Ca2＋、Na＋、NO3－、CO32－

B．Mg2＋、C1－、OH－、SO42－

C．K＋、Cl－、CO32－、NO3－

D．Ca2＋、Na＋、Cu2＋、NO3
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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 To get cash, for example, you are instructed to (11) that indicate whether the money should be withdrawn from a checking or a savings account and the (12) .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times, most machines will (18) .As another precaution against (19) , the bank generally limits the amount that may be withdrawn by cash card (20) , say, to $ 200.
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