Jungle(丛林) country is not friendly to ma

题型:阅读理解

问题:

Jungle(丛林) country is not friendly to man,but it is possible to survive there. You must have the right equipment and you must know a few important things about woodcraft(山林野外知识). Then your chances of staying alive are very good.

No one should go into the jungle without the right equipment. You need lightweight clothing, a good knife, and a compass. Fishhooks and a line,a rifle,matches in a waterproof container and a poncho(雨披) are necessary too. So is a mosquito net(蚊帐) to protect the head.

In the jungle you can get hopelessly lost within five minutes after leaving known landmark(地界碑). That is why you should always carry a compass. In open country during the day, you can tell which way to go by studying the sun. At night the stars are sure guides to direction. But in most places the jungle rooftop is so thick that it is impossible to see the sun or the stars. Again and again you must check your position by the compass.

Keep alert(警惕的). Watch the ground in front of you carefully. Stop and listen now and again. Avoid haste(匆忙), and rest often. In a place that is hot and humid(潮湿的), the person who sets a fast pace will soon become tired. A steady and even pace is wisest in the long run.

If you lose your way, don't panic. Try to decide how long it has been since you were sure of your position. Mark the spot where you are with blazes on a tree. Put them on four sides of the tree, so that you will be able to see them from any direction. Then you can begin retracing your steps(going back exactly the way you have come), knowing that you can always find the spot from which you started. Except in an emergency, never try to travel the jungle at night.

Whenever possible, it is wise to follow streams and rivers that are going in your general direction. This may cause you many extra miles of travel. But in the end it will save time and energy. Nothing is more exhausting (extremely tiring) than hacking(cutting) a way through unbroken jungle.

Surviving in the jungle is a science. The jungle people have become perfect in this science, and you can too. Learn as much as you can about what to expect in the jungle. Make sure you have the right equipment. Then no part of the jungle will seem completely or frightening. In fact, you will be able to “live off” it for a long time.

小题1:To keep alive in the jungle, you should make it clear that the right equipment is _________.

A.more important than a knowledge of woodcraft

B.less important than a knowledge of woodcraft

C.just as important as a knowledge of woodcraft

D.not as important as a knowledge of woodcraft小题2:If you lose your way in the jungle, which of the following can NOT be done?

A.Check your position by the compass again and again.

B.Decide how long ago it was that you got lost.

C.Tell which way to go by studying the sun/the stars.

D.Mark blazes on four sides of a tree and be sure to see them from any direction.小题3:The author is strongly against traveling at night probably because __________.

A.one tends to move too slowly at night

B.some animals will attack you

C.emergencies occur most frequently at night

D.it is more difficult to check your position小题4:“It is wise to follow streams and rivers”, which will ensure you to _________.

A.avoid animals’ attacks

B.save many extra miles of travel

C.avoid hacking a way through unbroken jungle

D.have a rich supply of drinking water

考点:政治经济类阅读历史文化类阅读
题型:阅读理解

请用所学化学知识解答以下生活中遇到的问题

(1)能否用铝制容器来盛装农药波尔多液?______,理由是______.

(2)硫粉在酒精灯火焰上引然后发出微弱的淡蓝色火焰,伸入盛有氧气的集气瓶后发出明亮的蓝紫色火焰.

______.

(3)证明氨水显碱性的一种试剂是______.

题型:阅读理解

战士小王在日记中写道:“凌晨我们出门巡逻,天寒地冻,气温零下20℃左右,周围一片林海雪原。而这个季节在我们家乡随处可见郁郁葱葱、婀娜多姿的椰树,人们也正在忙着早稻插秧。”据此,完成1-2题。

1.日记中这种景象差异的主要因素可能是 [ ]

A.降水

B.气温

C.地形

D.人类活动

2.下列叙述中,与小王家乡实际情况相符的是 [ ]

A.天寒地冻时,喜欢吃火锅

B.一年四季,孩子们在沙滩上嬉戏、游泳

C.老人们穿着羽绒服、戴着皮帽悠闲地散步

D.小朋友们在雪地堆雪人、打雪仗

题型:阅读理解

下列说法中正确的是[ ]

A.两个物体只要接触就会产生弹力

B.物体对桌面的压力是由于物体发生弹性形变产生的

C.滑动摩擦力的方向可能和物体的运动方向相反

D.形状规则的物体的重心必与其几何中心重合

题型:阅读理解

检测IgM抗体,用于病毒感染早期诊断的方法是________试验。

题型:阅读理解

下列选项中不是痔形成的因素是

A.无静脉瓣
B.直肠上、下静脉丛畸形
C.静脉壁薄弱,结缔组织萎缩缺乏支持
D.腹压增高
E.直肠肛管慢性感染

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