问题 单项选择题

下列关于植物细胞的结构和功能的叙述中,错误的是()。

A.植物细胞都具有叶绿体和液泡

B.植物细胞的细胞核里都含有遗传物质

C.植物细胞是植物体生命活动的基本单位

D.植物细胞一般具有细胞壁、细胞膜、细胞质和细胞核等结构

答案

参考答案:A

解析:A项,并不是植物所有的细胞都含有叶绿体,如叶的表皮细胞,故符合题意; B项,细胞质是一种液体,能够不断地流动,细胞核位于细胞质内,植物细胞的细胞核里含有遗产物质,故不符合题意: C项,细胞是植物体结构和功能的基本单位,故不符合题意: D项,植物细胞具有细胞壁、细胞膜、细胞质、细胞核、液泡、叶绿体等结构,故不符合题意。

阅读理解

根据短文内容,从短文后的选项中选出能填入空白处的最佳选项,选项中有两项为多余选项。

Most of us lead a busy life.  小题1: We think, “If I reached my goal, then I would be happy”, or “If I could get a better job, then I would enjoy life.” But why not enjoy life right now?

Firstly, take time to notice and appreciate the beauty in your own surroundings.  小题2: “There is a great big world of wonder and beauty around us!” And as Brodersen explains. “Look for the beauty of the sunrise and of a friend’s smile that brightens your day. Open your eyes to see the beauty you might not normally see. Doing so helps to cheer you up.”

Secondly, taking time to experience some simple pleasures also can bring joy to your heart and ease your stress. Take me for example.  小题3: One universal simple pleasure is finding things that make you laugh. Make time to laugh every day.

Thirdly, don’t take your family and friends for granted. Rich, rewarding relationships add greatly to the enjoyment of life. When you think of someone, why not call, e-mail or write them?  小题4: As Wayne Lawton explains, “Invest time in relationships. Remove the attitude, what’s in it for me? Happiness is found in putting other’s interests, desires and concerns ahead of our own whenever possible. Selfishness is a dead-end street.” 小题5:

A.I delight in simple things like my favorite tea drink, a bubble bath or family photos.

B.In my spare time, I enjoy collecting stamps and reading novels.

C.Driven by the “urgent”, we forget to enjoy life.

D.So please treasure relationship.E. You don’t need to travel far to find beauty.

F. Be aware of beauty in nature.

G. A short e-mail or phone call can make a world of difference to someone.

单项选择题