下列哪种生药可以用微量升华法鉴别（）A.天麻 B.钩藤 C.大黄 D.麦冬

阅读理解。

     Hello, I'm Dave. My school is in the centre of my town. I lived in the countryside before, because

Mum thought it was quiet there. It took me about an hour to go to school by bike. It was difficult for

me to get to school before eight o'clock in winter if(如果) it snowed. Sometimes I was late for class.

My teacher was a little angry with me. I had to get up before five thirty in the morning. I was always

tired in the evening. I told my parents about it. Last month Dad found a job in a supermarket in the

town. We moved to a house there. It's not far from the bus station and I can take the bus to school.

It takes me only fifteen minutes. Now I don't worry about(担心) being late for school. And sometimes

I can play football with my friends after dinner.

1. Dave's mum thought it was ______to live in the countryside.  

A. interesting  

B. exciting

C. quiet

D. surprising

2. Dave's teacher was angry with him because he ______.  

A. couldn't finish his homework

B. got bad marks

C. often fought(打架)with other boys

D. was late for school sometimes

3. Dave was always ______in the evening one month ago.  

A. happy  

B. tired

C. relaxed

D. sad

4. Now Dave goes to school _______.  

A. by bus  

B. by bike

C. by train

D. on foot

5. Now sometimes Dave ________ after dinner.

A. watches TV  

B. does homework

C. takes a walk

D. plays football with friends.

对受党纪处分的党政领导干部的年度考核有哪些规定？

— What's the matter with the man hanging his head there?

— Well, if you _____ know, he was caught stealing my bike.

A．must

B．may

C．can

D．shall

直流双臂电桥达到平衡时，被测电阻值为（）。

A、桥臂电阻与可调电阻相乘

B、倍率读数与桥臂电阻相乘

C、倍率读数与可调电阻相乘

D、桥臂电阻与固定电阻相乘

Oracle7.2之前的数据库连接用户名和密码在网络传输时是不进行加密的，为了要和旧版本兼容Oracle数据库9.02存在DBLINK_ENCRYPT_LOGIN参数用来调节数据库连接时用户名和密码的加密特性，以下说法正确的是：（）。

A、DBLINK_ENCRYPT_LOGIN为TRUE时，数据库连接加密用户名和密码

B、DBLINK_ENCRYPT_LOGIN时，数据库连接不加密用户名和密码

C、DBLINK_ENCRYPT_LOGIN为FALSE时，如果加密的数据库连接失败，会尝试不加密的连接

D、DBLINK_ENCRYPT_LOGIN为TRUE时，加密的数据库连接失败，也不会尝试不加密的连接