问题 选择题

下列属于生产者与消费者之间关系的是(  )

A.蛇吃青蛙

B.猫头鹰吃鼠

C.兔吃草

D.虎吃羊

答案

在生态系统中,生产者是指能进行光合作用,利用自己制造的有机物来维持生活,并为其他生物提供物质和能量.生产者一般指绿色植物.消费者包括各种动物,它们直接或间接以植物为食物.所以,在一个生态系统中,生产者与消费者之间存在着被吃与吃的关系.题目中,A.蛇吃青蛙、B.猫头鹰吃鼠、D.虎吃羊都是消费者与消费者之间的关系,不符合题意.

故选:C

完形填空
I'm thinking about what I'm going to do this summer.
Maybe I'll get a job. If I get a job, I'll have ____money to buy some new things. I'd like to have some new dresses ____ I start school again in September. I can also buy some books or some music CDs. I really love jazz(爵士乐).I could buy some more CDs____my jazz collection. Or I can use the money ____tennis lessons. I can play tennis ____,but I'd like to learn to play it much better. Or maybe I can use the money to pay for the piano lessons.I'd like to learn to play the piano,too.
    If I don't get a job this summer, I'll visit my grandparents in San Francisco. They live in a beautiful old house ____ the sea. My grandparents are always very nice to me. They'll let me sleep late. I ____ have to get up until 10 o'clock every day. I'll eat delicious food because my grandmother is an excellent ____.  She  always cooks my favorite food. I'll also go to the ____ with my grandparents. Because I like swimming in the sea. My grandparents like to go to museums but I don't enjoy it so much, so maybe I'll ____to watch TV.
小题1:
A.lessB.manyC.a fewD.enough
小题2:
A.becauseB.whereC.whenD.if
小题3:
A.inB.to C.atD.as
小题4:
A.to skateB.to pay for C.to spendD.to buy
小题5:
A.very goodB.well C.betterD.best
小题6:
A.inB.at  C.nearD.to
小题7:
A.be able toB.won't   C.mustD.may
小题8:
A.cookB.lawyer C.agentD.teacher
小题9:
A.museumB.San FranciscoC.shopD.beach
小题10:
A.travelB.go to collegeC.stay at homeD.lie on the beach
单项选择题