问题 阅读理解

阅读理解。

      Many children use the Internet to get useful knowledge and information, and to relax in their free time. But

some of them are not using it in a good way. Here are some rules to make sure you are safe and have fun on the

Internet.

      Make rules for Internet use with your parents. For example, when you can go on line, for how long and

what activities you can go on line.

      ※ Don't give your password (密码) to anyone else, and never give out the following information — your

real name, home address, age, school, phone number or other personal information.

      ※ Check with your parents before giving out a credit card (信用卡) number.

      ※ Never send a photo of yourself to someone in e-mail unless your parents say it's OK.

      ※ Check with your parents before going into a chat room. Different chat rooms have different rules and

attract different kinds of people. You and your parents will want to make sure it's a right place for you.

      ※ Never agree to meet someone you met on the Internet without your parents' permission. Never meet

anyone you met on line alone.

      ※ Always remember that people online may not be who they say they are. Treat everyone online as

strangers.

      ※ If something you see or read online makes you uncomfortable, leave the site. Tell a parent or teacher right

away.

      ※ Treat other people as you'd like to be treated. Never use bad language.

      ※ Remember — not everything you read on the Internet is true.

1. The writer tells children to ________. [ ]

A. send their photos to him

B. make rules for Internet use with parents

C. believe everything they read on the Internet

D. give out their personal information.

2. It's good for children to _______ on the Internet. [ ]

A. give password to others

B. get useful knowledge and information

C. give out a credit card number

D. go into a chat room as they'd like to

3. What shouldn't be done when you are on line? [ ]

A. Using bad language.

B. Sending messages and e-mails.

C. Leaving the site if you feel uncomfortable.

D. Treating everyone online as strangers.

4. If your parents don't agree, never _______. [ ]

A. read anything on the Internet

B. relax in your free time

C. have a face-to-face meeting with anyone you met online

D. treat other people as you'd like to be treated

5. The best title for this passage is "_______". [ ]

A. How to Use Computers

B. Surfing on the Internet

C. Information on the Internet

D. Internet Safety Rules

答案

1-5: BBACD

单项选择题

树懒是一种哺乳动物,生活在南美洲的热带雨林中。树懒外型比较奇特,短短圆圆的头,配上长长的四肢,尾巴短得几乎看不到,耳朵也不明显,毛为灰褐色,身长约70厘米,重约9千克。树懒以树为家,是彻底的树居动物,已经丧失了地面活动的能力。它们细长的爪子像结实的钩子一样紧握住树枝,头朝下一动不动地长时间悬挂着,甚至睡觉时也保持这种姿势。在地面时,它们的四肢斜向外侧,不能支持身体,只能靠前肢爬行,拖着身体前进。在热带盆地雨水泛滥时,树懒能游泳转移到安全的地方。

树懒生活在热带环境中,那里的温度比较稳定。树懒的体温调节功能不完全,静止的时候,它的体温变化在28℃~35℃之间。当环境温度降至27℃时,树懒便会有发抖现象,可见它适应的温度范围是有限的。

对于树懒来说,最好的食物是树叶和果实。雨林里一年四季都有树叶,所以它们是绝对不必为吃发愁的。而且由于树叶水分多,森林的环境又湿润,树懒也用不着下地饮水。

树懒是一种懒得出奇的哺乳动物,什么事都懒得做,这也是它名字的由来。它们懒得去吃,能耐饥一个月以上;懒得活动,每天睡觉时间长达十七八个小时。非活动不可时,动作也是懒洋洋的,极其迟缓。人们往往把行动缓慢比喻成乌龟爬,其实树懒比乌龟爬得还要慢,就连被人追赶、捕捉时,也好像若无其事似的,慢慢地爬行。

树懒的生存几乎不会受到自然界的威胁。首先,树懒的毛上寄生着一种地衣植物,这种植物依靠它的体温和呼出的二氧化碳,长得很繁茂,以至于像一件绿色的外衣,把树懒的身体包裹起来,使人类和其他动物很难发现它。而且它们又是在树上活动,所以天敌相对较少。其次,树懒的肉不好吃,这是进化带来的利于生存的好处。捕食者不会耗费自己的能量去吃难吃的动物。但是人类对美洲森林的破坏给树懒带来了灭顶之灾,现在树懒已经成为濒临绝种的保护动物。

关于树懒的生活习性,正确的是:()

A.遇到危险时跑得很快

B.终年都在树上生活

C.喜欢躺在树枝上睡觉

D.常为没有食物发愁

单项选择题