合同评审的依据是什么？

菜粉蝶在其生长过程中危害农作物时所处的变态时期为（　　）

A．幼虫

B．蛹

C．受精卵

D．成虫

高血压脑病治疗的关键是（）

A.迅速降低血压

B.治疗脑水肿

C.制止抽搐

D.纠正心衰

E.抗生素的应用

幼根生长的一方面要靠      区的细胞     使细胞数目增多；另一方面要靠       区的细胞     使细胞体积增大。

句型转换。

1. She has supper at 7:00 p. m. (对画线部分提问)

     ______ ______ does she have supper?

2. What time is it now? (同义句转换)

     ______ the ______ now?

3. Jack has his lunch at school. (改为一般疑问句)

     ______ Jack ______ his lunch at school?

4. Scott works very long hours every day. (改为否定句) 

    Scott ______ ______ very long hours every day.

5. I forgot to write a letter to my friend. (改为同义句)

    I failed to ______ ______ my friend.

呼吸道湿化的目的在于痰液干枯，保持呼吸道通畅，每日湿化水量不应少于500ml。