钩端螺旋体病

北大西洋海域的鲣鱼数量锐减，但几乎同时海豚的数量却明显增加。有人说是海豚导致了鲣鱼的减少。这种说法难以成立，因为海豚很少以鲣鱼为食。
以下哪项如果为真，最能削弱上述论证( )

A．海水污染对鲣鱼造成的伤害比对海豚造成的伤害严重
B．鲣鱼只吃鳕鱼，而鳕鱼是海豚的主要食物
C．在海豚的数量增加以前，北大西洋海域的鲣鱼数量就已经减少了
D．尽管鲣鱼数量锐减，海豚数量明显增加，但在北大西洋海域，海豚的数量仍少于鲣鱼

关于药物制剂包装材料的正确说法（）

A.对光敏感的药物可采用棕色瓶包装

B.玻璃容器可释放碱性物质和脱落不溶性玻璃碎片

C.塑料容器有一定的透气透湿性，会影响药物制剂的稳定性

D.乳酸钠注射液应选择耐酸性玻璃容器

E.制剂稳定性取决于处方设计，与包装材料无关

将下列铁路枢纽与其所交会的铁路线之间连线。

Everybody dreams. Some people think dreams can tell us about the future. Other people think dreams can tell us about ourselves. It’s like our (11) is talking to us.

Why are dreams (12) strange and hard to understand Some people think our brain uses (13) to talk to us. When we fly, swim, or fall down in our dreams, it has a (14) meaning. Lots of doctors help people (15) their dreams. They find that dreams tell us about our (16) and fears.

These days, many scientists (17) that dreams are very important. During the day, we have many (18) , and our brain receives a lot of information. When we dream, our brain (19) information that is not important, and puts the most important information into our (20) . As we learn more about the brain, we may find answers to our questions about dreams.

14().

A.special 

B.serious 

C.similar 

D.great

电力系统内部考核用的电能表，其电缆的电压降应不大于( )。

A．额定二次电压的0.2%；
B．额定二次电压的0.25%；
C．额定二次电压的0.5%；
D．额定二次电压的1%。