单双线半自动闭塞集中联锁（设置信号员）接发列车作业标准（）。A.TB/T1500 B

下面的菜名短语结构和其他三项不同一项是（ ）（2分）

A．鱼香肉丝

B．麻婆豆腐

C．蚂蚁上树

D．糖醋排骨

情景交际。

     根据对话内容,从对话后的选项中选出能填入空白处的最最佳选项,选项中有两项多余选项。

— Jim, what are you going to do tonight?

— I have no idea. What about you?

—    1   .

— Sounds good! But I hear there will be a talk at 7:00 in the City Hall.

—    2   .

—  The History of Music.    3    . 

—  Me, too.    4   .

— Good idea! But we must be quick. We have only twenty minutes left.

—    5    .

— We have to take a taxi because it's quite a long way.

— Can we ask John to go with us? He likes music, too.

— Ok. Let's go.

A. How shall we get there?

B. What's the talk about?

C. Where shall we go?

D. I'm interested in music.

E. Shall we go to see a film?

F. That's all right.

G. Why not go there together?

下列关于动植物生命活动凋节的叙述中，正确的是 [ ]

A．植物的顶端优势能够说明生长素作用的两重性

B．神经纤维膜内局部电流的流动方向与兴奋传导方向相反

C．寒冷刺激使下丘脑分泌促甲状腺激素增多

D．饥饿时，人体血浆中胰岛素含量增加

容易氧化的药物是

A．维生素C

B．红霉素片

C．疫苗

D．乙醚

E．青霉素

为什么采煤机附近瓦斯超限时必须停机停电？