搜题请搜索小程序“爱下问搜题”
问题 解答题

如图是内分泌系统示意图，请识图回答：

①A中分泌的激素是______，能促进生长发育．

②B中分泌的激素主要是______，它的主要原料有碘．

③C中的胰岛分泌的激素有______，它能降低血糖浓度．

答案

如图，A是垂体，能分泌生长激素，能促进生长发育；B是甲状腺，能分泌甲状腺激素，甲状腺激素分泌过多会患甲亢；幼年时甲状腺激素分泌不足会患呆小症，碘是形成甲状腺激素的主要原料，缺碘会患地方性甲状腺肿；C是胰腺，内有胰岛，能分泌胰岛素，能调节糖的代谢，降低血糖的浓度．

故答案为：①生长激素  

②甲状腺激素  

③胰岛素

阅读理解

Mary picked up a pencil and a piece of paper，saying，“Now，you want to earn money for the autumn camping trip，right?” Tom，her brother，nodded．He wasn’t able to go last year because he hadn’t earned enough money during the summer．This year he came up with a plan．

He made a necklace for his mother that everyone admired．They were surprised to learn that Tom had made it for her．Why not make more necklaces and sell them?

“OK，” said Mary，“The first thing you need to do is to figure out（计算）how much you have now．’’

“I have $20.00 in the bank，and $7.25 in my room，” explained Tom．

“That gives you a total of $27.25，” said Mary，“That is called your capital．The next thing you need to know is how much it will cost you to make each necklace．”

“Well，the pet shop will give me all the feathers the birds lose．I'll have to buy the beads（小珠子）and string，” said Tom．

Mary wrote on the piece of paper：

CAPITAL      $27.25

EXPENSES     Feathers                       no cost

String for 10 necklaces        $  2.50

Beads for 10 necklaces   +    $ 15.00

Total                        $ 17.50

“How much do you think you can sell such a necklace for?” asked Mary．

“Hmm，” Tom looked thoughtful and said，“There's a shop in town that sells almost the same kind of necklace for $ 7.50．If I charge（要价）$ 6.00，people will think that's a bargain．”

“OK．If you sell each necklace for $ 6.00，you'll make a good profit（利润）on each then，” said Mary．

“Hurray!” Tom cried，“If I sell 20 necklaces，I'll have enough from the profit for the camping trip and $10.00 left over．”

小题1:The underlined word "bargain" in this story means “________”．

A．something sold cheap

B．something sold expensive

C．something made at home

D．something made by children小题2:How much would Tom have to spend on the camping trip?

A．$ 47.45．

B．$ 75．

C．$ 85．

D．$102.25．小题3:What's the best title for this story?

A．How to Make Necklaces

B．How to Sell Necklaces

C．How to Make a Plan

D．How to Earn Money for a Trip
查看答案
阅读理解
How do you feel when you get up in the morning? Happy and active or tired and weak?
Do you often wake up with a headache(头痛)? Well, if the answer is yes, take Dr. Talbot’s advice and start feeling better.
☆ Get up and move. If you hate feeling tired and unhappy, you should start exercising, Try running, swimming or cycling. When we exercise, our body produces special chemicals (化学药品) that give us energy and make us feel happier. If you can’t stand exercising, listen to your favorite music and dance to it. That’s exercise, too.
☆ Eat healthily. You should eat three balanced (平衡的) meals every day and you shouldn’t eat too much fast food. If you need some extra (额外的)  energy the whole day, make an energy drink. Mix (混和) together fresh fruit juice and low-fat milk. It tastes great!
☆ Go out and enjoy nature. The smell of flowers will make you feel happy. Even the smell of your favorite food can change the way you feel!
☆ Wake your body up. When you have a shower, change the temperature of the water----from hot to cold and back to hot again. You’ll feel the difference.
☆ Laugh! You should laugh for, at least, three minutes, three times a day. It will make you feel great!
Problem:
You feel tired and  小题1:  or wake up with a headache in the morning.
Dr. Talbot’s  小题2:  :
1. Start exercising, your body will produce special chemicals to make you  小题3:  .
2. Listening to your favourite  小题4:  and dancing to it is also exercise.
3. Don’t  小题5:  too much fast food.
4. Drink the mixed fresh fruit juice to get some extra  小题6:  .
5. Go out and  小题7: nature, it can change the way you feel.
6. Changing the 小题8:  of the shower water can wake your body up.
7. Try to  小题9: for three minutes, three times a day. It will make you  小题10:  great. 
查看答案