问题 选择题

把带芽的马铃薯块栽到土壤中,培育成新植株,这种生殖方式属于(   )

A.出芽生殖

B.无性生殖

C.有性生殖

D.分裂生殖

答案

答案:B

题目分析:植物的繁殖方式分有性繁殖和无性繁殖,经过精子与卵细胞结合的生殖方式叫有性生殖,不需要两性生殖细胞的结合,有母体直接产生新个体,这种生殖方式叫无性生殖,马铃薯利用块茎上的芽繁殖,没有经过两性生殖细胞的结合,而是有母体直接产生的新个体,属于无性生殖,又叫营养生殖,选B。

阅读理解
阅读理解。
     Dear Jack, I am in China now. I have many new friends here. They are
very friendly. I often have dinner with them. I like many kinds of
Chinese food, like Sichuan food, Hunan food and Guangdong food. They
  are delicious. I'm very glad to be here.                                                             
                                                                                                           Yours,                                                             
                                                                                                             Jane

Picnic Plan Time: this Saturday
Place: West Hill Farm
People: students in Class 2, Grade 1

Don't forget
Jane bowls, dishes, guitar
 Michael  camera, vegetables
Maria  knife, chicken, kite
Kangkanghamburgers, apples
1. Who is the letter from? It's from _____.
    A. Jane
    B. Jack
    C. Michael
2. Who is NOT in Class 2, Grade 1? _____.
    A. Kangkang
    B. Jack
    C. Jane
3. What does the letter talk about? It talks about _____.
    A. food
    B. vegetables
    C. hamburgers
4. The students in Class 2, Grade 1 want to go to _____ this Saturday.
    A. cook dishes
    B. have a picnic
    C. buy some food    
5. Maria wants to take _____ to West Hill Farm.
    A. camera, kite and apples
    B. bowls and guitar
    C. kite, chicken and knife
单项选择题