下图所示，攻击者在信息从信息源结点传输到信息目的结点的过程中，所进行的攻击是（） A

阅读短文，判断对错，对的写“T”，错的写“F”。

John: Hello! Is that Zhang Peng?

Zhang Peng: Yes.

John: This is John. I'm going on a trip to Beijing. Can you go with me?

Zhang Peng: That's wonderful. But I need to ask my mother. When do you leave for Beijing?

John: I leave next Sunday.

( ) 1. John wants to go to Beijing.

( ) 2. John leaves for Beijing next Saturday.

( ) 3. Zhang Peng can go to Beijing with John together.

( ) 4. Zhang Peng doesn't ask his mother.

习惯用高声调语言者常致（）

A.说话易疲劳

B.音质不佳，鼻音重

C.说话后常觉喉部不适微痛

D.易发生声带小节

E.以上都是

He didn't go home _______ he finished his homework. [ ]

A. when

B. if

C. until

D. that

八珍是周代宫廷名菜，对后代影响深远，成为烹饪中特定的名词。 ( )

除哪项外均为肾脏合成的激素

A．肾素
B．红细胞生成素
C．肾上腺素
D．1α-羟化酶
E．抗利尿激素