若干个乒乓球有1个是次品,它与其他乒乓球质量不同,请用一架天平,设法找出这个次品

题型:解答题

问题:

若干个乒乓球有1个是次品,它与其他乒乓球质量不同,请用一架天平,设法找出这个次品球。   

(1)9个乒乓球中,已知次品球比正品球重,你要称几次才能保证找到这个次品球? 如何称?    

(2)9个乒乓球中,不知道这个次品球比正品球重还是轻,你认为需要称几次,一定可以找出这个次品球? 

考点:找次品
题型:解答题

下列关于“化学与生活”的认识不正确的是

A.食用铁强化酱油有助于预防缺铁性贫血

B.回收处理废旧电池既可节约金属资源又可减少环境污染

C.用聚氯乙烯塑料作食品包装袋有害健康

D.为提高牛奶的含氮量,可向牛奶中添加三聚氰胺

题型:解答题

根据发行主体的不同,债券可以分为()。

A.政府债券

B.公司债券

C.付息债券

D.贴现债券

E.金融债券

题型:解答题

C

HOTEL INFORMATION

Baymont Hotel

3800 W. Commercial, Ft. Lauderdale,FL33309

Lowest Prices 110% Guaranteed(保证).

Room Information;

Rooms are equipped with Double, Queen, or King bed (s) .smoking or non-smoking based on location and availability. Provided in each guest room is a hairdryer, coffee maker, iron, ironing board and cable TV.

Check-in Time: 7:00 P. M.

Hotel Amenities(设施) : Air Conditioner, Parking, 24 Hour Front Desk, Pool, Television with Cable, Coffee Maker in Room, Hairdryers Available.

*  *  *

Beach Plaza Hotel

625N. Fort Lauderdale Beach Blvd, Ft. Lauderdale. FL 33304

Room Information:

The oceanfront accommodations at Beach Plaza Hotel are some of the most affordable on Fort Lauderdale Beach. Each room has direct-dial telephone, cable television and daily maid service. Full kitchens available! All rooms surround the private poolside garden courtyard.

Check-in Time: 7:05 P. M.

Hotel Amenities: Air Conditioner, Coffee Maker in Room, 24 Hour Front Desk, Free Parking, Hairdryers Available, Pool, Television with Cable.

*    *    *

Fort Lauderdale Plaza Hotel

3711N. Ocean Blvd. Ft. Lauderdale, FL 33308

Room Information:

Guest rooms include TVs, in-room movies, Internet access, in-room safes, alarm clock radios, hairdryers, refrigerators, microwaves and balconies.

Check-in Time: 7:00 A. M.

Hotel Amenities: Parking, Heated Pool, Cable TV and Coffee Maker in Room.

49.Which hotel gives a promise?

A.Fort lauderdale Plaza Hotel        B.Beach Plaza Hotel

C.Baymont Hotel                D.All the three hotels

50.In which hotel is parking free?

A.Baymont Hotel               B.Beach Plaza Hotel

C.Fort Lauderdale Plaza Hotel            D.None of the hotels

51.If you ____.you will probably go to Beach Plaza Hotel.

A.enjoy seeing films without leaving your hotel room

B.are fond of swimming in heated water

C.want to eat food cooked by yourself in the hotel        

D.are a cigarette smoker

52.Which of the following is NOT true to the ads?

A.All of the three hotels provide television with cable.

B.You can keep your money in the in-room safe in Fort Lauderdale Plaza Hotel.

C.While staying in Fort Lauderdale Plaza Hotel, you can surf the Internet.

D.In Beach Plaza Hotel a 24-hour maid is available.

题型:解答题

写出下面句子的上句或下句。

(1)且夫水之积也不厚,______________。 (庄子《逍遥游》)  

   士不可不弘毅,_______________。 (《论语·泰伯》)

(2)故木受绳则直,金就砺则利,______________,则知明而行无过矣。  (苟子《劝学》)

   亦余心之所善兮,________________。 (屈原《离骚》)

(3)_____________,一夫当关,万夫莫开。 (李白《蜀道难》)

   独学而无友,____________。 (《札记·学记》)

题型:解答题

简述在选择解决方案时需要考虑的基本因素。

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