题目

在减数分裂的四分体时期，若细胞内有4个四分体，那么它所含的脱氧核苷酸链有 A．4条                B．8条                      C．16条                    D．32条 答案：D Planting happinessLast year, I bought a flower pot. But I didn’ t use it. Last week, I went to buy some flower seeds (种 子）. I planted the seeds in the flower pot.1.      But    I    went on watering the seeds. Onthe tenth day， I saw green sprouts (嫩芽). I was so excited. I knew that I could make something grow!2.      Our    lives    are    sometimes    like theempty pots. Our days are filled with lots of different things. However, we usually don’t do a lot of things just because they are of little importance. We feelthat something is missing. 3.      The thingsthat we may be missing in life are seeds of hope, love and dreams.I planted many different flower seeds that day, because I know that the things produced are exactly what I have planted. This is the same as plantingthings in life. 4.      If    I plant negativethoughts inside my heart, I will only become sadder and sadder with each passing day. If I plant seeds of hope, 5 .       A.Growing flowers is like growing happiness.B.The flower was growing fast.C.Everything that is planted inside my heart willgrow.D.For a few days, nothing happened.E.I can expect wonderful things.F.The missing things in my flower pot are seeds.G.I’m afraid I’ll let my parents down.