从方框中选择合适的选项补全对话。

(Mary's family are in a restaurant.)

Waiter: Good afternoon! Can I help you?

Dad: Yes, please.____

Mary: A large bowl (碗) of noodles with carrots and beef. I'm hungry.

Dad:____

Mary: Yes. A glass of apple juice.

Dad: OK.____ 

Mum: Just a bowl of beef soup.

Dad: All right.____ 

Waiter: Anything else? Would you like some chicken?____ 

Mum: Yes, a small piece, please.

Waiter: No problem.

A. What about you, darling? B. It's delicious. C. Anything to drink? D. Are you ready to order? E. What would you like, Mary? F. And I'd like thirty dumplings and a cup of black tea. G. How many do you want?

       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.

函数f（x）= $\sqrt{4-\left|x\right|}$ +lg $\frac{x^2-5x+6}{x-3}$ 的定义域为（   ）

观察表一，寻找规律．表二是从表一剪下的一部分，则a=（　　）

0	1	2	3	…
1	3	5	7	…
2	5	8	11	…
3	7	11	15	…
…	…	…	…	…

表一

17	20
23	a

表二．

如图是在显微镜下看到的人血涂片的情况，分析回答：