如图，在△ABC中，已知DE∥BC，$\frac{AE}{EC}=\frac{2}{3}$，则△ADE与△ABC的面积比为 ____.

    Mr. Black takes his daughter 1 a restaurant. They sit down, and there are a lot of  2 in the restaurant. They 3 for a long time, but no waiters come to their table.

    Mr. Black says, "I'm 4, I can't wait." He waits for a minute and says, "Now I am going to 5 something to get a waiter soon."

    He goes out of the restaurant and 6 the restaurant, "My 7is at a table in your restaurant, she 8 a red hat."

    The waiter finds the girl and he says to Mr. Black, "Yes, she's here. Do you want to 9 her?"

    "No," says Mr. Black, "But please give her something to eat quickly. She is very 10". Then he goes back to the restaurant. He is glad to see that a waiter is now at this table.

比较阅读下面两则古文选段，回答后面问题。
       【甲】见渔人，乃大惊，问所从来。具答之。便要还家，设酒杀鸡作食。村中闻有此人，咸来问讯。自云先世避秦时乱，率妻子邑人来此绝境，不复出焉，遂与外人间隔。问今是何世，乃不知有汉，无论魏晋。此人一一为具言所闻，皆叹惋。
       【乙】房玄龄^①奏：“阅^②府库甲兵，远胜隋世。”上^③曰：“甲兵武备，诚不可缺；然炀帝^④甲兵岂不足邪！卒亡天下。若公等尽力，使百姓乂^⑤安，此乃朕之甲兵也。”                  （选自《资治通鉴》）
       〔注〕①房玄龄：唐太宗时任宰相。②阅：查看。③上：指唐太宗。④炀帝：指隋炀帝。⑤乂（yì）：安定。

如果要“探究液体蒸发快慢与液体温度的关系”，应做____ 次实验；实验中控制的不变的量是液面的面积和____ 。

—Yes. He came to study here just last month.