嵌体患牙预备的要求为（） A.洞形无倒凹 B.洞缘有斜面 C.邻面可做片切形 D.线

对于经营租赁租入固定资产的租金，承租人应当在租赁期内各期间按照( )计入相关资产成本或当期损益。

A．直线法

B．平均年限法

C．年数总和法

D．工作量法

下列除杂质所选用试剂不正确的是 [ ]

A．用氧气除去CO₂中的CO气体

B．用适量稀盐酸除去NaCl溶液中的Na₂CO₃

C．用蒸馏水除去K₂CO₃中的CaCO₃

D．用稀盐酸除去铜粉中的铁粉

Some teens believe drugs will help them think better, and be more popular. These days, drugs can be found everywhere. Many teens are tempted(诱惑) by the excitement or escape from reality that drugs seem to offer.

Drugs are chemicals that change the way our bodies work. When you put them into your body, drugs find their way in your blood and are taken to parts of your body, such as your brain.

The effects of drugs can be different depending on the kind of drug taken, how much is taken, how often it is used, how quickly it gets to the brain, and what other drugs or food are taken at the same time. Although drugs can make you feel good at first, they can finally do a lot of harm to the body.

There are many kinds of drugs available, and there are many reasons for trying them regularly. People take drugs just for pleasure they believe they can bring. Often it’s because someone told them that drugs would make them feel good or that they’d have a better time if they took them.

Many teens use drugs because they’re unhappy or think drugs will help them escape their problems. The truth is that drugs don’t solve problems—they simply hide feelings and problems. When a drug wears off, the feelings and problems remain, or became worse. Drugs can ruin every aspect of a person’s life.

小题1:The main idea of the second paragraph is probably _________.

A．how drugs work

B．what drugs are made of

C．that drugs can reduce physical pain

D．that drugs dull your senses小题2: People take drugs regularly _________.

A．just for good health

B．because they can have a better life

C．just for pleasure

D．because they need them小题3: __________ cause teens to take drugs.

A．Physical pain, escaping and fear

B．Escaping, excitement and unhappiness

C．Curiosity, fear and escaping

D．Excitement, unhappiness and their physical pain小题4: Which of the following is NOT true ?

A．Drugs may be tempting to teens.

B．Drugs do harm to the body.

C．Drugs can solve people’s problems.

D．Drugs can make people happy.小题5:Which of the following would be the best title for the passage?

A．Drugs: the Killer of People

B．Drugs: the Favorite of Teens

C．Drugs: What You Should Take

D．Drugs: What You Should Know

变压器在什么情况下应进行核相？不核相并列有什么后果？

ABC会计师事务所承办了X股份有限公司 2005年度会计报表审计业务。针对X股份有限公司以下事项，请代注册会计师做出正确的专业判断。
针对X公司的会计报表附注(二)中披露“2005年12月27日，由于A公司状告X公司侵犯其专利权，要求赔偿300万元，截至2005年12月31日，该诉讼案正在审理中，无法预计其最有可能的赔偿金额。”注册会计师应山具( )。

A．标准无保留意见的审计报告

B．意见段之前加说明段的审计报告

C．无法表示意见的审计报告

D．意见段之后加强调事项段的审计报告