地球上植物种类繁多。它们中有高达90多米的植物，也有矮至几毫米的苔藓植物，甚至还有些肉眼都看不见的单细胞藻类植物。这些寂静无声的生命为我们提供赖以生存的两种基本物质，这两种基本物质是（     ）

选择关联词填空。  

如果……就……    因为……所以……     只要……就……    虽然……但是…… 

①____夫差不听谋臣们的建议，____最后吴国被消灭了。 

②我们____踏实努力地学习，____能取得好成绩。

③这件事____已经过去五年了，____它仍深深地印在我的脑海里。

④____没有太阳，地球上____没有光明和温暖。

   Sunday 1 the favorite day for our family. My parents 2  not 3 work. My sister and I 4 go to school. We 5 at home and 6 in the morning. In the afternoon, my sister and I 7 out to buy some different things. My sister likes songs. She 8 new tapes. I buy story books, a frisky, a kite and things 9 that. We also buy some small gifts (礼物) for our parents. We 10 them. They love us very much. We live in a happy family.

下列句子朗读节奏划分正确的一项是（ ）。