刘某未经王某的同意，擅自将王某空闲的房屋出租给张某。之后，王某连续=三个月按月向张某

甲公司欠乙公司30万元，一直无力偿付，现丙公司欠甲公司20万元，已经到期，但甲公司明示放弃对丙的债权。根据合同法律制度的规定，对甲公司的行为，乙公司可以采取的措施是（）。

A.行使代位权，要求丙偿还20万元

B.请求人民法院撤销甲放弃债权的行为

C.乙行使权利的必要费用自行承担

D.乙应在知道或者应当知道甲放弃债权2年内行使撤销权

五点法注水

在幼儿的记忆中，占主要地位、比重最大的记忆形式是（）

A．运动记忆

B．情绪记忆

C．形象记忆

D．语词记忆

Millions of Americans return from long-distance trips by air, but their luggage doesn’t always come home with them. Airline identification tags（标签） can come loose, and the bags go who-knows-where. And passengers leave all kinds of things on planes.

The airlines collect the items and, for 90 days, attempt to find their owners. They don’t keep them, since they’re not in the warehouse business. And by law, they cannot sell the bags, because the airlines might be tempted to deliberately misplace luggage.

So once insurance companies have paid for lost bags and their contents, and they no longer belong to passengers, a unique store in the little town of Scottsboro, Alabama, buys them. The “Unclaimed Baggage Center,” is so popular that the building, which is set up like a department store, is the number-one tourist attraction in all of Alabama. More than one million visitors stop in each year and take one of the store’s shopping carts on a hunt for treasures.

Each day, clerks bring out 7,000 new items, and veteran（老练的）shoppers rush to paw over them. You can find everything from precious jewels to hockey sticks, best-selling novels, leather jackets, tape recorders, surfboards, even half -used tubes of toothpaste.

The store’s own laundry washes or cleans all the clothes found in luggage, then sells them. The Unclaimed Baggage Center has found guns, illegal drugs and even a live rattlesnake.

The store has a little museum where some of its most unusual acquisitions（获得物） have been preserved. They include highland bagpipes, a burial mask from an Egyptian pharaoh's tomb, and a medieval suit of armor.

Statistics indicate that less than one-half of one percent of luggage checked on U.S. carriers is permanently lost and available to the store.

小题1:Paragraph1 shows that many passengers lose their luggage because______.

A．they are forgetful

B．the owners of some luggage can’t be identified

C．they are in a hurry

D．there is no lost and found office in many airports小题2:The reason why the airlines cannot sell the bags is that ______.

A．they have to find the owners

B．they have to keep the bags as long as possible

C．some bags are expensive

D．they are likely to make a profit on the bags on purpose小题3:The Unclaimed Baggage Center is very popular because______.

A．visitors may purchase something undervalued.

B．all thethings there are very cheap.

C．there's a large variety of goods.

D．visitors will enjoy some amusing activities there.小题4:What can we infer from the passage?

A．A little museum will keep all the precious unclaimed baggage.

B．The things in the Unclaimed Baggage Center are articles for daily use.

C．The percentage of passengers who lose their baggage for ever is small.

D．People are not allowed to buy the illegal things in the store.小题5:What is the main purpose of the passage?

A．To introduce an attractive place to tourists.

B．To remind passengers of taking care of their baggage.

C．To advise the airlines to find the owners of the unclaimed baggage.

D．To introduce how the unclaimed baggage in the airports is handled in America.

轴流泵加压密封活塞的压力比环管的压力高（）MPa。

A、1

B、2~3

C、3~4

D、4~5