办公室有甲、乙、丙、丁4位同志，甲比乙大5岁，丙比丁大2岁。丁三年前参加工作，当时2

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    ◆New! Watch it!

     Learn the techniques scientists use to study animal behavior in the aquarium (水族馆) and in the wild,

and practice those techniques with our collection. You'll sharpen your observation skills, and learnhow to

create a list of an animal's behavior and how to use that list to collect data. This program is a great

preparation for science projects about animal behavior.

     Ages: 12-15

     Session: Sunday, Feb. 10th, 2:00-3:30 pm

     Fee: $16 members; $24 non-members

    ◆Sea Time for Baby

      You can dig in the sand, splash in the water, color a fish, and touch live sea stars as you and your baby explore marine-themed stations in our classroom. Colorful books, puzzles, and penguin feathers will be

available, and we'll snap a picture of the fun and e-mail it to you later.

     Ages: 6-18 months, with adult

     Session A: Saturday, Jan. 12th, 11:00 am-12:00 noon

     Session B: Saturday, Mar. 15th, 10:30 - 11:30 am

     Fee: $14 members; $22 non-members

     ◆Pre-K Planet Ocean!

      Why do some animals have fins? How do seals stay warm? Look into the animals here with your

child in these hands-on programs. Role-playing, songs, art activities, and lots of interaction are all included. Choose from two topics -- take one or both. In Session A, Fishy Fun, you'll touch shark teeth and fish

scales, and create a paper fish to take home. In Session B, [WTHX]Mammals[WTBZ] (哺乳动物), you'll experience the softness of sea otter fur, and learn what keeps most marine mammals warm.

     Ages: 3-4, with adult

     Session A: Saturday, Mar. 29th, 2:00 - 3:00 pm

     Session B: Sunday, Apr. 13th, 10:30-11:30 am

     Fee: $16 members; $24 non-members

     $26 members, $42 non-members for both sessions

     ◆The Trainer Experience

     How do you tell an 800-pound sea lion what to do? In this interactive workshop, you will learn what

it's like to be a marine mammal trainer, and how targets, and time-outs (休息时间)all contribute to

successful mammal training.

     Ages: 9-12

     Session: Sunday, Mar. 9th, 9:30-11:00 am

     Fee: $16 members; $24 non-members

1.From the first program, you can learn             .

A. how to dig in the sand

B. how to make a paper fish

C. the skill in training mammals

D. the behavior of animals

2.When can you go to play with shark teeth freely?

A. Sunday, Feb. 10th, 2:00-3:30 pm

B. Saturday, Mar. 15th, 10:30-11:30 am

C. Saturday, Mar 29th, 2:00-3:00 pm

D. Sunday, Apr. 13th, 10:30-11:30 am

3. If you want to have a picture of your activity, you can choose              .

A. Sea Time for Baby

B. Pre-K Planet Ocean!

C. The Trainer Experience

D. New! Watch It!

4. If you are a member and your parents will take you to experience "Fishy Fun", you will pay          .

A. $56

B. $94

C. $64

D. $110

加强通风，可降低形成爆炸混合物的（）达到防爆的目的。

对借款申请人偿还能力证明材料进行审核时，可以通过房产证、存单、股票、债券等判断稳定的工资收入状况。

施工单位委托不具有相应资质的单位承担施工现场安装、拆卸施工起重机械等设施的，责令限期改正而没有改正的，责令停业整顿，并处( )的罚款。

A．2万元以上5万元以下
B．10万元以上30万元以下
C．5万元以上10万元以下
D．10万元以上20万元以下

氩气是惰性气体，在高温下分解并与焊缝金属起化学反应（）