正常人机体每日蛋白质需要量为A．0.15g/kgB．0.3～0.5g/kgC．0.8

When many of us take a vacation, more than anything, we seek to relax. We spend long, lazy days on a beach chair or in a hammock(吊床). But too often, we return home, tired.

It doesn’t have to be this way.

In fact active vacations are often the most relaxing of all. We don’t expect you to take up jogging(慢跑), or climbing. Rather, we ask the sedentary(久坐的) vacations among you to spend two to four hours a day doing things, such as walking in the city street, going to a zoo or biking along the ocean.

These kinds of activities aren’t just good for your physical health. They improve your mental health, even your spiritual health. Here are some fresh ideas to make your vacations as pleasurable as they are active and healthy.

A walk at dawn or dusk helps keep you young. Try to make this a daily habit of life when you’re away from home, and you will guarantee yourself both physical and spiritual refreshment.

Don’t allow yourself to spend all your time sitting in front of water. Whether it is the ocean, a swimming pool, or a tree-lined lake, make sure you get into the water for swimming or games, or even walking. Merely standing in waist-high water is a good workout, thanks to the action of the water. And you’ll feel so much more active!

Many of us spend a large chunk of our vacation on the road, either getting to and from our destinations, or using the car for sightseeing. But no matter how beautiful the scenery is, great, memorable vacations don’t happen in a car seat. Frequently get out and stretch, walk, picnic, shop, visit, and have fun. It’s important for your health and energy, and it makes traveling a lot more active and interesting

小题1: The idea in the text is mainly to _______.

A．suggest ways to make vacations relaxing

B．suggest places for relaxing vacations

C．explain the reasons for having vacations

D．explain the relationship between vacations and health小题2: Which of the following can be considered as a form of exercise?

A．Sitting by a lake.

B．Standing in water.

C．Staying in a car.

D．Enjoying beautiful scenery.小题3:In the last paragraph, the author seems to advise us to _______.

A．have vacations frequently

B．get out of the car frequently

C．go on vacations on foot

D．stay in a car seat

爆炸作业及火药物品的管理，必须遵守现行的国家标准（）的有关规定。

A、《爆破安全规程》

B、《爆破作业规范》

C、《爆破操作准则》

Shopping for clothes is not the same experience for a man as it is for a woman. A man goes shopping because he needs something. He knows what he wants, and his purpose is to find it and buy it, the price is a less important consideration. All men simply walk into a shop and ask the assistant for what they want. If the shop has it, the salesman immediately produces it, and the business of trying it on is done at once. All being well, the bargain (交易) can be and often is completed in less than five minutes, with hardly any chat and to everyone’s satisfaction.

For a man, slight problems may begin when the shop does not have what he wants. Then the salesman tries to sell the customer (顾客) something else he offers the nearest he can to the thing required. He usually says, "I know this jacket is not the style (式样) you want, sir, but would you like to try it on for size It happens to be the color you wanted." Few men have patience with this treatment, and the usual reply is: "This is the right colour and may be the right size, but I should be wasting my time and yours by trying it on."

Now how does a woman go about buying clothes She does so in the opposite way. She has never fully made up her mind what she wants, and she is only "having a look round". She is always open to persuasion, indeed she considers of great importance what the saleswoman tells her, even what her friends tell her. She will try on any number of things. Highest in her mind is the thought of finding something that everyone thinks suits her. Most women have an excellent sense (判断力) of value when they buy clothes. They are always trying to find an unexpected bargain. Faced with a roomful of dresses, a woman may easily spend an hour going from one counter (柜台) to another before selecting the dresses she wants to try on. It takes a great deal of time but gives great joy. Most dress shops supply chairs for the waiting husbands.

What does the passage tell us about women shoppers for clothes().

A. They welcome suggestions from anyone.

B. Women seldom consider buying cheap clothes.

C. Women often buy things without thinking.

D. They listen to advice but never take it.

“同心圆模型”、“扇形模型”、“多核心模型”被称为三个经典的城市空间结构模型，它们的共同特点是以下哪一项( )

A．可以说明所有城市的空间结构

B．考虑了交通轴线对城市空间结构的影响

C．考虑了经济因素对城市空间结构的影响

D．考虑了社会文化因素对城市空间结构的影响

当使用Color Sampler Tool（颜色取样器工具）设置了多个取样点后，如果想删除某个取样点，那么该如何操作（）。

A.通过颜色取样器工具的选项栏中的Clear按钮

B.用鼠标将取样点拖拉出图像的窗口

C.按住Alt键并在取样点上单击

D.选中取样点后按Delete键