shouldn't carry unnecessary things or more than what you need.
If you're going on a business trip of not more than 2～3 days, then make sure you don't carry more than a single bag. Pack 2～3 business suits, a night suit and also some casual clothes (便服). You'll need casual clothes because you might get a chance to explore the place.
While on holidays of 5～6 days, you have to be very smart while packing your bag. First of all, check the climate of the place. If it's summer, then carry lightweight clothes and if it's winter, then you have to pack a sweater. For holidays, pack all the small things you'll be requiring. But don't carry too many things.
If you're going to a relative's place, then you can be a bit relaxed because if you miss something, you won't have to worry as your relative will be there to help you. But don't forget to buy gifts for your relatives. If the gifts are fragile,_then pack them in a hard box and always keep
them in between clothes. No need to carry too many clothes as you can wash your clothes at their place. This will also help you to shop more and more.
28．While packing for a trip, we needn't consider ________.
A．the climate of the destination B．possible activities at the destination
C．how long we'll stay at the destination
D．how long it takes us to go to the destination
29．The underlined word “fragile” in the last paragraph probably means “________”．
A．hard to use B．easy to break
C．difficult to carry D．important to prepare
30．If we go to travel in a relative's place, we ________.
A．can carry fewer clothes with us B．had better stay at the relative's
home
C．don't have to buy too many things there
D．should buy expensive gifts for the relative
31．What does the passage mainly talk about?
A．What to take while traveling. B．How to pack baggage according to the duration.
C．How to take care of the baggage while traveling.
D．Why packing baggage is necessary while traveling.
答案与解析：
本文是一篇说明文，主要介绍了如何根据旅行的持续时间来选择需要带的行李。
28．解析：细节理解题。根据第四段第二句、第三段以及第二段第三句可知，目的地的气候、在目的地的活动以及在目的地需要待的时间都是应当考虑的问题。D项“去目的地所需要花费的时间”在文中未提及。
答案：D
29．解析：词义猜测题。根据画线词所在句后半句可知，应当把这类物品放在坚固的盒子里并将其放在衣服中间。由此可推知，此处指易碎物品。
答案：B
30．解析：细节理解题。根据最后一段倒数第二句可知，如果是去亲戚所在的地方旅行，就不需要带太多衣服，即可以少带一些衣服。B项在文中未提及；根据文章最后一句可排除C项；D项中的expensive错误。
答案：A
31．解析：主旨大意题。通读全文可知，本文主要介绍了如何根据旅行的持续时间来选择需要带的行李。
答案：B
D
The amount and type of food you eat has a great effect on your health. Your body needs a continuous supply of energy to fuel the continuous processes of life, such as your heartbeat, and breathing. You also need energy to grow and repair
your body's tissues (组织), and to power your muscles for movement. This energy is provided by your food and drink. As well as getting enough energy, you need to make sure your diet includes necessary nutrients (养分) such as carbohydrates, protein, fats, vitamins and minerals. There is good evidence that eating a healthy diet can reduce your risk of illnesses like fatness, heart disease and several cancers.
Healthy eating is about eating the right amount and balance of foods, month in month out. Eating the right balance of foods from the main food groups is important for daily health. There are five main food groups: starchy foods, fruit and vegetables, dairy foods, meat and beans, fat and sugar.
Starchy foods such as bread and potatoes are the main source of carbohydrate. Each gram of carbohydrate provides you with about four calories. You should aim to eat at least five portions of fruit and vegetables each day. Fruit and vegetables cut the risk