输卵管通畅检查（） A.检查于月经来潮前14天进行 B.检查于月经来潮12h内进

细菌菌体抗原的特异性基础主要是()

A．肽聚糖

B．外侧多糖链

C．核心多糖链

D．内毒素

E．脂质A

阅读理解。

     It's 7:45 in the morning, and 26-year-old Steve Clarkson is going to work. He puts on his jacket,

and picks up his mobile phone and laptop. As he leaves the house, he turns on his MP3 player and puts

on his headphone. He is ready to go.

     Today, for millions of people, gadgets like Clarkson's are a normal part of life.  "I'm a reporter for a

magazine, and I'm usually not in the office. My mobile phone and laptop help me to do my work both

on the road and at home," says Clarkson. Today many people can check e-mails, send messages, or

surf  the Web, using their mobile phones.

     Tina Fang is studying photography in New York City.  "Some of these gadgets are expensive, but

they can save your money in the long run. I have a digital camera. l can use it to take eighty pictures and

shoot video ( record an image onto video) at the same time. I listen to music on my MP3 player, and I

can download and read books on it, too. I use the camera and MP3 for both learning and fun. "

     It's now 9: 45. Steve Clarkson gets e-mails from his 17-year-old sister. She has a gadget that lets

her send e-mails, play games, and take notes. She is in class right now. "I e-mailed her back. I told her

to stop playing, and pay attention, "laughs Clarkson.  "These gadgets are fun, but sometimes they can 

distract (分散注意力) people, too."

l. What is Steve Clarkson?

A. A student.

B. A reporter.

C. A businessman.

D. A computer programmer.

2. Which of the following things is not a gadget?

A. A picture.          

B. A laptop.

C. An MP3 player.    

D. A mobile phone.

3. When his sister had lessons, Steve told her _________.

A. to pay no attention

B. to e-mail him back right away

C. to stop playing games

D. to listen to music on the MP3 player

广州最大的寄宿制幼儿园是（）。

A、广州第一幼儿园

B、蓓蕾幼儿园

C、育才幼儿园

D、广州第二幼儿园

既可杀虫，又可疗癣的药物是（）。

A.南瓜子

B.苦楝皮

C.使君子

D.槟榔

累积的体液损失量是指 _________ 。