在"仲景立法，天下后世之权衡"中，"权衡"的意义是：（） A.秤锤 B.秤杆 C.变

你能找出下列句子中的错误吗？选出来并改一改。

( ) 1. Where did you do on your holiday?　　　　________________

　　　　　A 　B 　　C

( ) 2. I am tired and I had a cold yesterday.　　　________________

　　　　　A 　　 B　 C

( ) 3. My father went to work by bus every day.　________________

　　　　　　　　　A 　　　　B 　　　C

( ) 4. — Did you read books?  — Yes, I didn't.　 ________________

　　　　　A 　　　B 　　　　　　　　　C

通读对话，然后选择可以填入相应空白处的五个答案。

A：Good morning. ____

B：Yes, please. Could you introduce me a nice place to see over the weekend?

A：OK, Qingdao is a nice place to visit. ____ The weather is neither hot nor cold.

B：Sounds good. ____

A：You can get there by train.

B：Shall I visit places of interest by bus in Qingdao?

A：Sure. ____

B：Really perfect. ____

A：280 yuan each person. It includes train tickets, park tickets, hotel and meals.

B：Well. It’s nice. I’d like to book the tour for two.

A．It’s the right time to go there.

B．Which place are you going to visit?

C．How can I get there?

D．Hope you will have a great time there.E. How much does it cost?    F. Can I help you, madam?

G. Our sightseeing bus will take you around the city.

关于造影剂的分类组合哪种是错误的

A．硫酸钡--高密度造影剂

B．泛影葡胺--无机碘化物

C．空气、二氧化碳、氧气--低密度造影剂

D．胆影葡胺--有机碘化物

E．碘苯酯--碘化油类

A．交换技术

B．路由技术

C．隔离技术

D．隧道技术

技术规范