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问题 单项选择题

环境毒理学的特殊毒性方法是

A．急性、亚急性、慢性毒性试验
B．急性、亚慢性、慢性毒性试验
C．致癌、致突变、致畸测试方法
D．致癌、致突变、慢性毒性试验
E．致突变、致畸、慢性毒性测试方法

答案

参考答案：B

听力题

第四部分（共三节，满分35分）

第一节：单词拼写（共10小题，每小题1分，满分10分）

1.Many rare animals are in d________, because they are being hunted for

2. While reading, please pay much a__________ to your pronunciation.

3. After some years, he has f__________ the habit of having a walk after supper.

4. It's still u__________ whether he will come or not.

5. It is o__________ that he has known the story.

6. What he said r_______me of my old friends.

7. We must keep the b___________ of nature.

8. Some boys like to play j_________ on the others

9.He earned his l________  by selling newspapers.

10.People will clean graves and light incense in m________ of their ancestors.
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多项选择题

下列各项中，属于会计政策变更的有( )。

A．分期收款销售商品由按合同约定收款日期确认收入改为按销售成立日公允价值确认收入

B．无形资产摊销方法由直线法改为产量法

C．投资性房地产的后续计量由成本模式变更为公允价值模式

D．发出存货的计价方法由先进先出法变更为加权平均法
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