下列四组水果中，全部产在南方地区的是（    ）

我们所说的小康社会应该包括（    　）
①物质生活的改善  ②精神生活的充实  ③居民生活水平的提高 ④生态环境的改善 ⑤三个文明协调发展 

镁、锌等金属与H₂O₂可形成“金属-H₂O₂”电池，能为潜水器提供动力，可用食盐水作为电解质溶液，如下图所示。下列有关Zn-H₂O₂电池的说法正确的是（   ）

       One day Daddy and I went out    1    a walk. On the way we   2   a lot of people. We went up and   3  a look. Oh, dear!   4  did we see? There   5  a donkey(驴) in the middle of the road. It would not move. The cars and buses could not get 6  .
Then a policeman came. " 7  donkey is this?" he asked. "It' s   8   ," said a farmer, "but I   9  move it. " The policeman and the farmer did 10 best to move the donkey, but it would not move. We laughed, but the  11   of the cars and the buses were   12   . "We can't move the donkey," the farmer and the policeman said. "What shall we do?"
"Give him a carrot," my father said.
"   13 a good idea!" said the farmer.
Soon he found a   14 and showed it to the donkey. When the donkey saw a carrot, it jumped up and walked after the farmer.  15   the cars and buses could get past at last.

与左心室相连的血管是（　　）