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问题 单项选择题

五种药物的LD50和ED50如下所示，最有临床意义的是( )。

A．LD5050mg/kg，ED5025mg/kg

B．LD5025mg/kg，ED5020mg/kg

C．LD5025mg/kg，ED5015mg/kg

D．LD5025mg/kg，ED5010mg/kg

E．LD5025mg/kg，ED505mg/kg

答案

参考答案：E

阅读理解

读短文，判断下列各题是否正确，正确的画(√)，不正确的画(×)。

      Hi! Boys and girls. My name is Garfield. I am a cat. My father is John. He loves me very much. He is older

and taller than me. But I'm fatter than him. I like to sleep (睡觉). And I like to eat Pork Rolls (猪肉卷). John

likes to eat chicken. We're different. I have a dog friend, Odie. He likes running. But I don't like sports. Odie

and I like to play with a ball together. We are happy.

( ) 1. Garfield is a dog.

( ) 2. John is an older and taller cat.

( ) 3. John likes to eat Pork Rolls.

( ) 4. Odie is a dog, he likes running.

( ) 5. Odie and Garfield like to play together.
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单项选择题

某矿山企业原有固定资产价值12000万元，改扩建项目拟投资8000万元，若不实施该项目，为维持矿山正常运行，也需投资2000万元，假设两种情况下，原有固定资产都全部利用，且投入资金全部形成固定资产，则改扩建项目建设形成的增量固定资产价值为( )万元。

A．2000
B．6000
C．8000
D．12000
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