决定消费者的劳动供给行为的是（） A.劳动和正常商品的选择替代 B.劳动和低档商品的

阅读理解。请根据对话内容，判断下列说法的正(√)误(×)。

Peter: Hi! Are you hot (热的), Lin Ling?

Lin Ling: Yes, I'm very hot. And I'm thirsty (口渴的).

Peter: Me too. Would you like something to drink?

Lin Ling: Yes, I'd like some water. What about you, Peter?

Peter: I'd like a glass of juice.

Lin Ling: Oh, it's time for lunch. What food would you like?

Peter: I'd like some noodles. Do you want to have some noodles, too?

Lin Ling: No, I'd like some rice and chicken for lunch.

( ) 1. Lin Ling is hot and thirsty.

( ) 2. Lin Ling would like some water.

( ) 3. Peter would like some water.

( ) 4. Peter wants to eat some noodles for lunch.

( ) 5. Lin Ling would like some noodles for lunch.

以下描述正确的是

①离子化合物中只存在离子键，共价化合物中只存在共价键②活泼非金属元素与活泼金属元素只能形成离子键③非金属元素间只能形成共价化合物④所有物质中均存在化学键⑤HF比HCl、HBr、HI更稳定，是因为HF分子间存在氢键

A．①⑤

B．②④⑤

C．④⑤

D．以上均不正确

某女患者，36岁。心搏增快，乏力，怕热多汗，烦躁易怒、食亢、易饥、消瘦四年，加重月余。其兄有类似病史。体查：T37.0℃，心率120次／分，BP142/70mmHg，甲状腺Ⅱ。增大、质软、右叶可闻及血管杂音、未扪及结节。双眼稍突、皮肤潮湿，双手抖（+）。

检测甲减最灵敏的指标是（）

A.FT3

B.FT4

C.TSH

D.TPO

E.TRH

药典六号筛的筛目为（）

A.10目

B.50目

C.65目

D.100目

E.120目

For（1） service, we need a virtual-circuit subnet. Let us see how that works. The idea behind virtual circuits is to avoid having to choose a new （2） for every packet sent. Instead,when a connection is established, a route from the （3）machine to the destination machine ischosen as part of the connection setup and stored in tables inside the（4）That route is used forall traffic flowing over the connection, exactly the same way that the telephone system works.When the connection is released, the virtual circuit is also terminated. With connection-orientedservice, each packet carries an （5）telling which virtual circuit it belongs to.

（2）是（）

A.processor

B.device

C.route

D.terminal