人体血液中的白细胞通过什么途径使入侵的细菌进入细胞内（） A．主动运输 B．简单扩散

f（x）=x²，g（x）=2^x，h（x）=log₂x，当x∈（4，+∞）时，三个函数增长速度比较，其大小关系是______．

根据对话情景，填入恰当的单词。

L-Lisa, E-Edward

L: The last day of school finally comes. What are you doing on this summer vacation?

E: Well, from tomorrow on, I'm working as a __1__ in my dad's restaurant.

L: Really? So soon?

E: I really like to meet people and want to save some money for college.

L: Are you __2__  every day?

E: No. I'm not working on weekends.

L: What are you doing then?

E: I'm going to a friend's cabin (小屋) by the lake on most weekends. I like __3__ and water-skiing. It's

    great to stay in the water in summer.

L: Oh, that sounds like fun!

E: I'm going to __4__  with my cousin in the last week. We both like places of interest (名胜古迹).

L: Have a great time!

生产运营系统的维护和改进不包括( )。

A．设施的维修与可靠性管理

B．员工工作理念的提升

C．整个生产系统的不断改进

D．先进的管理模式

核间性眼肌麻痹是由于哪个部位的损伤

A．视束 

B．视放射 

C．膝状体 

D．内侧纵束 

E．动眼神经

妊娠期妇女用药注意事项

妊娠期妇女使用可导致胎儿永久性耳聋的药品是

A．胰岛素
B．氮芥类
C．甲巯咪唑
D．青霉素类
E．氨基糖苷类