题目

下图为碳循环示意图，甲、乙、丙表示生态系统中的三种成分，下列叙述正确的是（   ） A．碳循环是指二氧化碳在甲与丙之间不断循环的过程 B．乙在该生态系统中均处于第二营养级 C．甲、乙、丙共同组成了生态系统 D．生物X可能不具有成形的细胞核，生物Y可能含有线粒体 答案： It was a Sunday morning. My parents went to attend the marriage celebration of one of my relatives in the next village. I did not go with ______ because I wanted to prepare for my tests at home. But I was expected to attend the feast(宴会) at 1:00 p.m.At about 11:00 in the morning my ______ came. My parents were not in so I had to treat him myself. I went to the kitchen and ______ the biscuits. But I couldn’t find them. I also tried to ______ a cup of tea for him. But there was no milk. I went to my neighbor’s house and borrow some milk. But I was so ______ that I added salt instead of sugar. When I offered the cup of tea to my uncle, he gladly accepted it. Then I ______ my mistake when he asked for sugar for the tea. I couldn’t find the sugar. So ______ I rushed to my neighbor’s house for it.After the ______, my uncle left. It was time for me to go and attend the feast. However, when I went to get my bike, I found that it had a flat tire(瘪了的轮胎). I thought of ______ the neighbor’s bike, but I felt embarrassed(尴尬的) to ask him for help for the third time. ______ I decided to go there on foot. However, by the time I got there, the feast was already over. I told my parents everything and they pitied me for my bad day.【1】A.himB.herC.itD.them【2】A.friendB.uncleC.grandfatherD.neighbor【3】A.waited forB.asked forC.searched forD.pay for【4】A.drinkB.prepareC.dropD.buy【5】A.carelessB.proudC.braveD.modest【6】A.repeatedB.reducedC.realizedD.remembered【7】A.onlyB.againC.alsoD.yet【8】A.teaB.lunchC.testD.feast【9】A.repairingB.sellingC.losingD.borrowing【10】A.ButB.OrC.SoD.Though