
过敏性休克首选肾上腺素.主要与其下述作用有关()
A.兴奋心脏β1受体,使心输出量增加
B.兴奋支气管β2受体.使支气管平滑肌松弛
C.兴奋眼辐射肌α受体,使瞳孔开大
D.兴奋血管α受体,使外周血管收缩.血压升高;使支气管粘膜血管收缩,降低毛细血管的通透性,利于消除支气管粘膜水肿。减少支气管分泌
E.抑制肥大细胞释放过敏性物质


A.兴奋心脏β1受体,使心输出量增加
B.兴奋支气管β2受体.使支气管平滑肌松弛
C.兴奋眼辐射肌α受体,使瞳孔开大
D.兴奋血管α受体,使外周血管收缩.血压升高;使支气管粘膜血管收缩,降低毛细血管的通透性,利于消除支气管粘膜水肿。减少支气管分泌
E.抑制肥大细胞释放过敏性物质
Task 2 Fill in each blank with the appropriate form of the word given in brackets.
1. We assure you of our best __________(serve) at all time.
2. They mainly trade with Chinese __________(nation) firms.
3. Our foreign trade is continuously __________(expand).
4. We are writing to you for the purpose of __________(establish) business relations.
5. We believe in the bright future of long-term __________(cooperate) with your company.
6. From the Chamber of Commerce, we have understood that you are one of the largest
__________(import) of coals.
7. We are the__________ (manufacture) of electric shavers.
8. If you need more information__________ (regard) our products, please contact us.
9. To support your sales, we have specially prepared for you some samples of our new products for your __________ (consider).
10. If the businessman __________(intend) to buy for import, he may also request for
catalogues, samples, price lists, etc.