各类营养物质在人体消化道内被消化酶消化的先后顺序是（　　） ①蛋白质　　②无机盐　　③淀粉　　④脂肪　　⑤维生素

A．唾液腺、肝脏、胰腺 B．肠腺、胰腺、胃腺

C．唾液腺、胃腺、肝脏 D．肝脏、胰腺、肠腺

A．身体呈长梭形 B．体温不恒定

C．体内有脊柱 D．有鳍，用鳃呼吸

A．食物缺乏 B．氧气不足

C．空间太小 D．相互攻击

A．口腔 B．食道 C．胃 D．小肠

　　A. In the office.

　　B. At school.

　　C. At home.

　　D. In the company.

　　A.    Every computer must have the Internet.

　　B.    The Internet is more and more popular.

　　C.    Most of the information is in English.

　　D.    English is important in using the Internet. 

What is the passage mainly about？

　　A. Internet.

　　B. Information.

　　C. Computers.

　　D. E-mails.

　　A. but B. or C. and D. so

　　A. will have B. will has C. is going to have D. is going to be

　　A. too to B. to too C. to to D. too too