问题 选择题

把颗粒饱满的小麦种子分为两组,分别种在甲乙两个花盆里,然后把甲盆放在阳台上,乙盆放在室内较暗的地方,实验过程中保证二者所处温度、土壤潮湿程度等其它条件都相同,则几天后甲乙两盆内种子的萌发情况(  )

A.甲先萌发

B.乙先萌发

C.甲乙同时萌发

D.两盆都不萌发

答案

实验条件中除了光照条件,其他所有条件都是相同的,而且都是有利于种子萌发的外界条件,通过分析探究实验中对照组的实验条件,可以得出只有光照为该探究实验的惟一变量.所以该实验探究的应该是光照是否影响种子萌发.由于外界条件:一定的水分、充足的空气、适宜的温度,这些条件甲、乙都同时具备,因此种子都能够正常萌发.

故选:C.

完形填空

阅读下面的短文,根据以下提示:1)汉语提示;2)首字母提示;3)语境提示,在每个空格内填入一个适当的英语单词并将该词完整地写在右边相对应的横线上。所填单词要求意义准确,拼写正确。

Last weekend, our school organized a social activity. We are required

to find out how much the countryside has changed.

The countryside takes          a new look both in living environment     小题1:       

and metal outlook. Hills are c            with trees and gardens are filled   小题2:       

with flowers. Rivers are clean with bridges            them, which are       小题3:         

very             (方便). Farmers are living in the beautiful houses which  小题4:         

are equipped with fine             (家具).What impressed us most is      小题5:        

            farmers are paying special attention to their cultural life.    小题6:        

           they have much money and less physical burden, they have    小题7:         

more time for leisure. People look____________ energetic and younger than   小题8:         

their age. This activity was _________(确实) a big surprise for us. What we  小题9:         

saw in the countryside was far better than we  e                        小题10:        

判断题