（）的主要作用是提高汽车前轮行驶的安全性。A、主销后倾 B、主销内倾 C、前轮外倾

暑湿伤表证的代表方剂是

A．新加香薷饮

B．羌活胜湿汤

C．三仁汤

D．黄芩滑石汤

E．藿香正气散

Complete the dialogue with proper sentence.

A :Hello, Wang Li. Have you watched the interview on Oriental Horizon.(东方时空)?

B: Not yet.

A: (1)____________________!It's about China's manned spaceship Shenzhou VI.

B: Really? (2)_______________________?

A: OK. The manned spaceship Shenzhou VI with astronauts Fei Junlong and Nie Haisheng is traveling in space.

   The reporter from Oriental Horizon interviewed them. Their family spoke to them through the video phone.

   Fei Junlong's daughter sang "Happy Birthday" to her father.

B: (3)_________________________! I hope I have a chance to watch it.

A: (4)_________________________. This program will be on tonight.

B: Great! (5)________________________. Goodbye.

A: Goodbye.

男性，58岁。因咳嗽、痰血1个月余来院就诊。X线检查右肺门块影伴右膈抬高，关于后者应特别注意鉴别膈肌麻痹和肺底积液，最简便有效的方法是（）

A.透视

B.CT扫描

C.磁共振显像

D.纤维支气管镜检查

E.核素扫描

如果取分子间距离r=r₀(r₀=10^-10m)时为分子势能的零势能点，则r<r₀时，分子势能为   值；r>r₀时，分子势能为    值。如果取r→∞远时为分子势能的零势能点，则r>r₀时，分子势能为     值；r<r₀时，分子势能可以为     值。（填“正”、“负”或“零”）