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积极参加无偿献血是每一位健康公民应尽的义务。下列有关献血和输血的说法中，错误的是（ ）

A．一个健康的成年人，一次献血200～300毫升不会影响身体健康

B．献血有利于提高自身造血器官的造血功能

C．输血时血型不同就会造成血液凝固

D．输血时应以输同型血为原则

答案

答案：C

输血的原则是同型输血，因为不同血型可能发生红细胞凝集反应，会堵塞毛细血管。

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_____小题1:Susan is a big eater. She usually has a lot at every meal. So she wonders whether she could only eat less for the first meal of a day to lose weight.

_____小题2:Tina is a fat girl who doesn’t like exercise much. She just wants to lose weight by eating less but not doing exercise.

_____小题3:Maggie is a busy office lady. She usually has to work overtime every day. So she could only have her dinner late at night. She wants to be slimmer so that she could be much more attractive.

_____小题4: Judy is a fashionable designer. She hopes to have a slim shape as models. She usually doesn’t have any regular meal, but has some snacks when she is hungry.

A．If you eat less for breakfast, you have a lower chance of losing weight. Breakfast is important. It gives the body sufficient energy to sustain itself through the morning, and it also stimulates metabolic (新陈代谢) activity in the body. Metabolism is what consumes fat and what makes us slimmer. So, don’t forget to eat something for the breakfast.

B．If you ate your last meal right before going to bed, the calories accumulated from this meal could be twice the amount accumulated from a same meal if you ate it another time during the day.

C．Many people stop doing exercise when they eat less. When you do this, your body will burn less fat. So even if people take in less calories, they get rid of less too. The balance is then unchanged.

D．People gain fat not from the food they eat, but from the number of calories in the food. For example, a bunch of vegetables has just one tenth the calories contained in a small bit of chocolate cake. So make sure you have adequate regular meals, but firmly say no to various snacks, milk tea or even instant noodles.
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Columbus College,241 Queen Elizabeth

Drive，Kowloon City

Memo

To：All Staff

From：Jakie Mok，Secretary；Sports Development Committee

Date：May 20,

    A week ago，“Sports for Life”programme was sent to the parents，requiring them to select a sport

they wanted their child to play.Since then，our staff have received lots of calls from parents asking for

more information about it.Here is a memo(备忘录)for your reference when you answer the phones.

Sports 1：Basketball

    We expect that this will be the most popular of the four sports.Therefore，students should be advised

to sign up as soon as possible.Students will take a private bus to and from Kwun Tong Sports Park.To

cover the cost of hiring a bus，each student will have to pay $10 each time.There will be four basketball

courts available for our use with one teacher watching over each game.

Sports 2：Gym

    We will be using St.Peter's Memorial Park.There are two reasons for choosing this park.First，it is

not very busy and crowded before 6：00 pm.Second，it has lots of trees with plenty of shade.Students

must bring along two bottles of water to prevent thirst.Three activities，skipping，jogging，outdoor

aerobics(有氧运动)，all of which are free of charge，will be arranged.And there will be a teacher on

duty for each of the activities.

Sports 3：Hiking

     Hiking(远足)will take place at Kowloon Peak.The activity will start at 2：30 pm and finish 90

minutes later.Three teachers will accompany the students，and a hiking instructor will accompany each

group of 15 hikers.Each instructor will cost $75/hr.Students are advised to bring plenty of water and

sunscreen.

Sports 4：Swimming

     The Kowloon City Aquatic Centre is a 10minute walk from our school.Four teachers will go to the

pool and conduct the goingson from the poolside.We will only be able to reserve the pool for one hour

(i.e.2：45 pm to 3：45 pm). Only students skilful at swimming can take up this activity.The pool will

have two lifeguards present.Girls must wear a swimming suit.The cost is $10 per visit.

1. Which of the following is TRUE according to the passage?

A. Students selecting basketball had better register early.

B. Students participating in gym should arrive at 6：00 pm.

C. Hiking usually begins at 2：30 pm and lasts 2 hours.

D. Students having swimming suits can take up swimming.

2. It can be inferred from the passage that ________.

A. students taking part in basketball will walk to the courts

B. every student can gain admission to one of the four sports

C. hiking students can have a regular rest in the shade of trees

D. students taking up the four sports should bring bottles of water

3. It can be concluded that ________.

A. each sport will take only one hour

B. students will be charged for the four sports

C. all the sports will take place at Kowloon Peak

D. teachers will accompany students on each sport

4. The purpose of the memo is to ________.

A. attract students' interest in the programme

B. require the parents to select a sport for their child

C. help the staff explain the programme to the parents

D. remind teachers and lifeguards to be present on time
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