短文填词 We middle school students have had

曲线y=lnx的过原点的切线方程是______．

某股份有限公司共发行股份3 000万股，每股享有平等的表决权。公司拟召开股东大会对另一公司合并的事项作出决议。在股东大会表决时可能出现的下列情形中，能使决议得以通过的是( )。

A．出席大会的股东共持有2 700万股，其中持有1 600万股的股东同意

B．出席大会的股东共持有2 400万股，其中持有1 200万股的股东同意

C．出席大会的股东共持有l 800万股，其中持有1 300万股的股东同意

D．出席大会的股东共持有1 500万股，其中持有800万股的股东同意

请列举出4种你知道的消防设施。

E

Dick was born in a poor family. His father had a small boat and went fishing in the morning and sold the fish in the market in the afternoon. Then he bought some food for his family. When winter came, they were often hungry. One morning the hungry man fell into the river and wasn’t found. Dick’s mother left her three-year-old son without saying good-bye. His aunt had to look after him.
Twenty years passed. Dick became a tall, p man. He found work on a farm. lie worked hard and wanted to get more money. He often went to see his aunt with some nice presents. The woman was very happy but one day she died in a traffic accident. The young man was very sad. After he buried her, he decided to buy a beautiful tombstone(墓碑) for her. He went to town and came in a shop, but all the tombstones were too expensive. He asked, "Do you sell an old tombstone, sir "Yes, we do, sir," answered the shopkeeper. "Is it as expensive as the new one"
"No, it’s much cheaper," said the man. "But another name was engraved (刻) on it. " "It doesn’t matter, " said Dick. "My aunt couldn’t read. \

Dick wanted to get more money to ______.

A．marry a wife

B．give his aunt nice presents

C．buy a farm

D．build a house

用万用表R³100Ω档测量二极管的正、反向电阻，（）时可判断二极管是好的。

A、正向电阻几欧，反向电阻几兆欧

B、正向电阻几十欧，反向电阻几千欧

C、正向电阻几十欧，反向电阻几十千欧

D、正向电阻几十欧，反向电阻几百千欧