问题 选择题

下列所描述的现象中,不属于生命现象的是(  )

A.小鸡破壳而出

B.小鱼在水中游动

C.合欢的叶子在夜幕降临时合拢起来

D.气象卫星绕着地球运动

答案

生物生命活动的基本特征有:生物的生活需要营养;生物能进行呼吸; 生物能排出体内产生的废物;生物能对外界刺激做出反应;生物能生长和繁殖;除病毒以外,生物都是由细胞构成的等六个特征.

A:小鸡破壳而出属于生殖现象,故该选项不符合题意;

B:小鱼在水中游动属于鱼的本能,故该选项不符合题意;

C:合欢的叶子在夜幕降临时合拢起来属于应激性,故该选项不符合题意;

D:气象卫星绕着地球运动,但气象卫星不具有营养、呼吸、排出体内产生的废物、对外界刺激作出反应、生长和繁殖、除病毒以外,是由细胞构成的等生物的特征.不是生物,因此不属于生命现象,选D.

故选D

单项选择题 B型题
阅读理解

This is the age of being busy.Many of us live in busy places and have busy lives.Even the roads are busy as we try to get from here to there.Adults are busy going to jobs and taking care of their families.Kids are busy,too,going to school and doing lots of homework after school and on weekends.

Busy isn’t bad,necessarily.If you’re not busy enough you might be bored.But if you’re too busy.you might break down.For instance,if you have a soccer game that runs late on a school night and you haven’t eaten dinner or done your homework.that’s a not—so—fun kind of busy.We wanted to know what kids thought,so we did a KidsPoll about being busy with 882 girls and boys aged 9 to 1 3.

Almost all of them said they felt stressed because they were too busy.About half said they felt this way once in a while or some of the time.But l 7%said they felt this way most of the time and 24%said they felt like this all the time! Oh dear,that’s no fun.

Only 4%of kids said they wanted less free time and l8%said they already had just the right amount.But,no big surprise,61%of kids wish they had a lot more free time.If they had more time.most would spend it hanging out or playing with friends.

Often,adults plan large parts of a kid’s day,especially during the school year.Kids can’t tell their parents they’ll be skipping school(逃学)today to get more free time!But they can tell their parents they’d like to play a game or read a book during their free time instead of watching TV.

小题1:.The purpose of the first paragraph is to

A.introduce the topic

B.support the main idea

C.raise the topic sentence

D.attract the readers’ attention小题2:.According to the passage,the Kidspoll is done to carry out research on

A.how kids arrange their free time

B.what kids think of being busy

C.how many kids felt stressed

D.what kids do with fheir study小题3:.According to the KidsPoll,what conclusion can we draw?

A.91%of the kids think being busy is no fun.

B.22%of the kids don’t need more free time.

C.61%of the kids spend free time playing.

D.24%of the kids like the busy way.小题4:.From the passage,we can infer that the writer agrees kids can

A.spend their free time hanging or playing out

B.get a lot more free time from their parents

C.have a right amount of free time with permission

D.get more free time from school work sometimes