文化部在加快文化产业发展的措施中指出,积极探索是否能通过对低收入群体和贫困地区发放文化消费券等方式,

分泌褪黑素的是

A.下丘脑

B.腺垂体

C.甲状腺

D.肾上腺

E.松果腺

请帮忙给出正确答案和分析，谢谢！

眼晶状体

A.异种抗原

B.同种异型抗原

C.异嗜性抗原

D.自身抗原

E.肿瘤相关抗原

请帮忙给出正确答案和分析，谢谢！

Pakistani and U. S. officials have formally signed an agreement before they______.

A．fought together against the terrorist group

B．negotiated on the anti-terrorism cooperation

C．spied on the Taliban in Afghanistan

D．united to form. coalition troops

请帮忙给出正确答案和分析，谢谢！

男性患者35岁，发现血压增高两年，自述头昏头胀痛，体检：血压150/95mmHg，胸片呈主动脉型心，诊断为高血压病。进一步检查发现，病人患有痛风和支气管哮喘，此时应

A、不需换药，继续原来治疗

B、改用钙拮抗剂或β受体阻滞剂

C、改用血管紧张素转换酶抑制剂或钙拮抗剂

D、改用利尿剂或利血平

E、B和D均可

请帮忙给出正确答案和分析，谢谢！

Which of the following behaviors is not welcomed in western societies？

A．Showing your gratitude when receiving gifts.

B．Eating quietly at a restaurant.

C．Opening a closed door without knocking.

D．Visiting friends at their homes when getting their invitation.

请帮忙给出正确答案和分析，谢谢！