—Yes! I have seen it twice.

—Yes! I have seen it twice.

下列结构属于组织的是（　　）

①皮肤  ②蝗虫的外骨骼  ③叶脉  ④芽的生长点  ⑤神经纤维  ⑥果实．

中国古代科技长期领先于世界。下列有关古代科技成就表述正确的是（    ）

已知当x∈[0，1]时，函数y=（mx﹣1）² 的图象与y= $\sqrt{x}$ +m的图象有且只有一个交点，则正实数m的取值范围是（　　）

重新排列下列语段，组成一篇意思连贯的短文（第一段已给出）

    Mr. and Mrs. Smith have just opened a small restaurant. In order to attract customers, they put a notice in front of the restaurant, which said “Meals on the House for Three Days.”

{#blank#}1{#/blank#}

A.  He walked towards the restaurant and saw the notice. “American people are really strange. They even eat dinners on the house! But how can I get up to the top of the house? ” he said to himself.

B. “Doesn't your notice say ‘Meals on the House for Three Days'? Is it just a joke?” the foreign student answered.

C.  When they heard this, both Mr. Smith and the policeman laughed. “Don't you know what ON THE HOUSE means? Look it up in the dictionary.” the policeman said.

D.  A foreign student who didn’t know much English happened to pass by the restaurant on the second day. It was lunch time and he felt very hungry. “Well, here is a restaurant. I am going to have something to eat.”

E.  He looked around and found a ladder against a tree nearby. He was very glad. But as he reached the top he heard someone shouting at him, “Hey, what are you doing up there?” Mr. Smith was looking at him angrily and beside him was a policeman.

用方框中所给单词的适当形式填空，使句子通顺、正确(每词限用一次。

1）Guangdong is in the {#blank#}1{#/blank#} of China.

2）We should try our best to help animals live {#blank#}2{#/blank#}.

3）The best time {#blank#}3{#/blank#} the penoy( 牡丹 ) in Heze is in April.

4）The boy received a lot of money, but he didn’t {#blank#}4{#/blank#} it.

5）Pandas don't have many {#blank#}5{#/blank#} and they often die.

如图为蔬菜大棚内一天24小时二氧化碳含量的变化曲线，一天当中，有机物积累最多的时间是（　　）

回答下列问题：

回答下列问题：