按第三强度理论计算如图5-58所示单元体的相当应力ΣR3是（）MPAA．20

84.__________

Does Tom know any other foreign languages __________English

A．but
B．except
C．besides
D．beside

-- Never'thought to see you here.
--__________

A．So did I.
B．Oh, haven' t you
C．It' s a small world.
D．I' m well. Thank you. And you

--She asked you when_________ again
--Tell her that I'LL let her know when he

A．he came; comes
B．would he come; will come
C．he came; will come
D．he would come; comes

回答题
Here is a poster on a middle school website.
Going, Going, Gone!
The Haynes Middle School Parent Teacher Organization
invites you to attend our latest fund(基金)-raiser,
The Fourth Annual Haynes School Auction(拍卖) !
Saturday, May 10
6:00 p. m.--11:00 p. m.
in the school hall
6:00 p. m. --6:30 p. m. : All items for auction are previewed.
6:30 p. m. --7:00 p. m. : Silent auction begins.
7:00 p. m.--7:30 p. m. : Highest bidders (出价人) from silent auction are determined.
7: 30 p. m. --11:00 p. m. : Main auction begins.
Items up for bids in the silent auction range in value from $ 5.00 to $ 30.00.
Items up for bids in the main auction include the following:
Airline tickets to a place of your choice
Weekend getaways at firstclass hotels
Season tickets to the Chicago Bears football game
$ 50 gift tickets to local gift shops, restaurants, and salons
Theater tickets to The Merchant of Ve.nice
Don't miss the boat! Book your tickets today. Last year, tickets sold out in five days! Tickets are sold on a first-come, first-served basis. $15.00 per person. All the money from the auction will be given to the Haynes School computer laboratory.
Which of the following is NOT mentioned as being up for bid at the auction

A．A movie pass to the local cinema.
B．A weekend stay at a hotel.
C．A ticket to a restaurant.
D．Airline tickets.

回答题
Millions of hamburgers are eaten by people in every corner of the world every day. Together with hot dogs and Coca-Cola, hamburgers have been the most important American contribution(贡献) to international eating habits The name "hamburger" has nothing to do with ham( 火腿). It is believed that the hamburger was first brought to the United States by Germans from the city of Hamburg some time in the 1850s. From then on the hamburger became a kind of popular American fast food.
Now young people in Asia, Europe and South America have learned to eat while on the move;a hamburger in one hand and a soft drink in the other. There have been cries to anger from Italy and Spain about the shortening of the usual lunch break. Instead, young people have discovered a lunch for which they don't have to stop at all.
However, there are clouds over the hamburger-' s world. People who concern about health dislike the high animal fat in the hamburger. They think the time saved seems a high price to pay for poor health. The packages in which hamburgers are usually served are causing serious pollution problems in many large cities. Big hamburger companies are destroying large areas of South American rainforest to produce the cheap meat they need. So, will the hamburger celebrate its next century
In which way do hamburgers change people' s eating habits

A．People can have their meals at any time of the daY.
B．They can be served in any restaurant.
C．People can have them with soft drinks.
D．Meal time can be greatly reduced.

回答题
Forty-thousand .of the world' s young, children die every day. This is 15 million, year. Many of these deaths can be prevented. In fact, experts say, techniques now exist to save the lives of half of these children. The techniques are medically effective, simple to use and low cost. The biggest task has been to inform parents about these life-saving techniques.
Diarrhea(腹泻)is the main cause of deaths among children in developing countries. Diarrhea results when the body tries to clear itself of harmful bacteria(细菌). The body does this by getting out liquids, sometimes uncontrollably. If too much water, sugar and salt are lost in this way, the body cannot work normally. The child may die.
The United Nations International Children' s Fund, UNICEF, introduces a technique. It uses a simple mixture of sugar and salt in water. The mixture does not stop diarrhea. But if used often as needed, it keeps fluid (体液)levels normal until the body has fought off the harmful bacteria. In Egypt, for example, the treatment was used in a children' s health care program in the province of Alexandria. It reduced by one-half the number of deaths caused by diarrhea. The technique has now been used throughout the country.
According to the passage, a large number of children can be saved only when

A．the life-saving ways are medically effective
B．their parents are rich enough for the life-saving techniques
C．the life-saving techniques are easy to use
D．their parents learn the life-saving techniques

回答题:

Faithfully Yours,

Mary Lee

A．she has difficulties handling her daily work efficiently
B．she can hardly get a chance to be promoted
C．she finds her present job too challenging
D．she is tired of her duties at the college