90%的视网膜母细胞瘤发生在()A．1岁以前 B．2岁以前 C．3岁以前 D．4岁以

下面每个句子中均有一处错误。在错误的地方划线，在句子后面的横线上写出正确的词。

1. The accident was occurred at five o'clock. ______

2. I was joking, but he took me serious. ______

3. The chair is in a way, so please move it away. ______

4. The statue is a monument about our war dead. ______

5. That reminds me a joke I heard last week. ______

6. When he looks at the menu, an astonishing look quickly appears on his face. ______

7. I know nothing about the young lady, except she is from Beijing. ______

8. You can never imagine the trouble I had found your address. ______

9. The students were leaving the class while the teacher came in. ______

10. To be honestly, the music is boring. ______

典型霍奇金淋巴瘤的RS细胞，下列描述不正确的是（）

A.CD45多阳性

B.CD15多阴性

C.CD30多阳性

D.CD68多阳性

E.CD75多阳性

教育传播效果

以N_A代表阿伏加德罗常数，则关于热化学方程式：C₂H₄(g)+3O₂==2CO₂(g)+2H₂O(l)；△H＝-1300kJ/mol的说法中，正确的是[ ]

A．有2N_A个碳氧共用电子对生成时，放出1300kJ的能量

B．有N_A个水分子生成且为液体时， 吸收1300kJ的能量

C．有12N_A个电子转移时，该反应吸收1300kJ的能量

D．有8N_A个碳氧共用电子对生成时，放出1300kJ的能量

简述广告的事中检测和事后评估方案一般应包含哪些方面的内容。