我国《合同法》规定，当事人可以通过和解或者调解解决合同争议。当事人不愿和解、调解或者

今年“四爷”雍正帝很忙，各种版本的故事被拍成了电视剧，学过这段历史的你能判断出下列选项中哪项才是雍正帝所为吗？

A．设驻藏大臣管理西藏

B．派人与俄国签订《尼布楚条约》

C．册封五世达赖为“达赖喇嘛”

D．建立“金瓶掣签”制度

下列关于丝绸之路的叙述，不正确的是[ ]

A．丝绸之路是连接欧亚大陆的重要商路

B．阿拉伯人是往来于这条路上的主要商人

C．中国的四大发明由丝绸之路传人欧洲

D．亚历山大东征促进了丝绸之路的开辟

下列哪一种辅因子的生成可通过测定340nm处吸光度的升高数来计算（）

A.FAN

B.NAD⁺

C.NADP⁺

D.NADPH

E.FMN

工业制镜和热水瓶胆镀银时，常用________作________剂，反应时该糖中的________基被氧化成________基，反应的化学方程式为_______________________________________。

"It’s no use, Mum," said Johnny. "I’m just no good at dancing."

"You’ve got to keep trying. Tonight will be (1) , dear. Try a turn with that pretty Lisette. "

Johnny (2) . Every Saturday night used to be the best of the week. He and his parents went to the (3) at the Club, where his hero, Alcide, played the accordion with the band. But lately everything had changed. Now that Johnny was older, he was (4) to dance with a girl!

(5) Johnny and his parents arrived at the Club, music had already started. Johnny got up his (6) to approach Lisette. "May I have this dance" Johnny asked. "That’s all right."said Lisette. Johnny struggled to keep up with Lisette’s (7) steps, but he was always one beat behind her. Then Johnny heard his friend Pierre say, "Look! Johnny has two left feet!" (8) burst from the crowd. Johnny (9) and ran outside, determined never to go to another dance.

The next Saturday, Alcide (10) to Johnny’s house for some potatoes. He happened to hear Johnny playing the accordion. Alcide’s eyes (11) . "Bring that accordion and play some songs tonight," Alcide said. Then he drove off, leaving Johnny staring open mouthed (12) him.

At the Club, Johnny scanned the crowd for Lisette and (13) her. The band played for a long time before Alcide said, "Dear friends, I got a (14) for you tonight. Young Johnny is going to join us!" (15) , Johnny stepped up on the platform, his eyes on the floor. He began to play, and the band (16) behind him. When the song ended, he heard cheers. Johnny kept playing until the dance was (17) . "You did a fine job tonight. Play with us again next Saturday night, " Alcide said. "Yes, sir! " said Johnny. (18) he went outside, Johnny saw Lisette and her friends near the door. Lisette stepped (19) , smiling. "You played really good tonight!" she said."Thank you," Johnny blushed. As he walked on, Pierre (20) moved out of the way for him to pass.Johnny patted his accordion. Come to think of it, in his whole life, he had never once seen Alcide out on the dance floor.

3().

A．platform

B．appointment

C．meeting

D．dance