题干

高等植物细胞内不存在的细胞器是

A:核糖体

B:内质网

C:中心体

D:线粒体

上一题 下一题 0.0难度 选择题 更新时间:2018-08-07 09:37:08

答案(点此获取答案解析)

C

同类题3

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。

    Do you have the experience of digging out your suitcase, deciding what to bring and being afraid that you've forgotten something? ____ Hope they can transform the way you pack.

Keep a Basket Handy

    Do you wait until the last minute to pack? Keep a basket in your bedroom, living room, or bath room that you can use to throw in items you need to pack as you come across them. ____Besides, you can just put the contents of the basket into your suitcase if you are in a hurry to leave for the airport.

Buy Wrinkle-free Clothing

    You won't need to worry about carefully packing your items of clothing if they're made from wrinkle-free materials.____ They'll still look fresh and bright when you are in them at your destination.

Keep Old Packing Lists

    Chances are that you end up taking trips that require you to pack similar items. Keep old packing lists from former vacations to the beach, ski resort, and city - that way, you'll always have a list of at least the basics.____So you don't need to waste your effort to remember where you left your hand-written packing lists.

Schedule a Packing Time

    Time can slip away from you before a trip — you may be caught up at work, at home, or be occupied with other responsibilities of daily life. ____That way, you will not need to do your packing frantically(狂乱地)from the last minute to 1 o'clock on the day you leave.

A. Buy necessary stuff when you arrive.

B. That's why I've distilled(提炼)the art of packing down to some essential trips.

C. Just roll them up or put them at the bottom of the suitcase.

D. Determine a night well in advance of departure to pack.

E. Rolling your clothes is the best way to save space for the suitcase.

F. The best way to do this is to save them on your computer.

G. This makes you less likely to forget the stuff.