问题 阅读理解

阅读理解。

     *Teachers Wanted

      Are you a teacher? Do you like children? Can you help them with Chinese on weekends? Come to join

us. Call John at 378-5788 for more information(信息).

     *Ping-pong Club

     Do you like to play ping-pong? Do you want to play ping-pong well? Mr. Cai can teach you. You can

come here every Saturday afternoon.

      Tel: 368-5778

     Add: Room 212 in School's P.E. Building.

     *Learning Japanese

     Can you speak Japanese? Do you want to learn Japanese? Please join the Japanese Club now. Call

Jane at 345-1238.

     Time: 8:30 a.m.-l1:00 a.m. (from Monday to Friday)

     *Musicians Wanted

     Are you a music lovers? Can you sing or dance? Can you play any instruments (乐器)? Welcome to

our Star Rock Band. Please call Tina at 898-3443 or send an e-mail to music@163.com.

1. Gina is a good teacher and she wants to find a job. Who may offer (提供) her a job?[ ]

A. Tina.

B. John.

C. Jane.

D. Mr. Cai.

2. You can be in the Japanese club for _____ to learn Japanese from Monday to Friday. [ ]

A. 2.5 hours

B. 3.5 hours 

C. 4 days

D. 5 days

3. If you are a music lover, you want to be a dancer, how can you contact (联系) them? [ ]

A. Go to Room 212 in School's P.E. Building.

B. Call Jane.

C. Send an e-mail to music@163.com.

D. Call 368-5778.

4. Who can teach you to play ping-pong?[ ]

A. Tina.

B. John.

C. Jane.

D. Mr. Cai.

5. Now Vera can speak Japanese well and she teaches children Japanese.

   She works from Monday to Friday.

   Can you guess (猜) where she works? [ ]

A. The ping-pong Club.

B. The star Rock Band.

C. The Teacher Club.

D. The Japanese Club.

答案

1-5  BACDD

单项选择题
问答题

某高层办公楼,总建筑面积137500m2,地下3层,地上25层。业主与施工总承包单位签订了施工总承包合同,并委托了工程监理单位。
施工总承包单位完成桩基工程后,将深基坑支护工程的设计委托给了专业设计单位,并自行决定将基坑支护和土方开挖工程分包给了一家专业分包单位施工。专业设计单位根据业主提供的勘察报告完成了基坑支护设计后,即将设计文件直接给了专业分包单位。专业分包单位在收到设计文件后编制了基坑支护工程和降水工程专项施工组织方案,方案经施工总承包单位项目经理签字后即由专业分包单位组织了施工,专业分包单位在开工前进行了三级安全教育。
专业分包单位在施工过程中,由负责质量管理工作的施工人员兼任现场安全生产监督工作,土方开挖到接近基坑设计标高(自然地坪下8.5m)时,总监理工程师发现基坑四周地表出现裂缝,即向施工总承包单位发出书面通知,要求停止施工并要求立即撤离现场,施工人员查明原因后再恢复施工。但总承包单位认为地表裂缝属正常现象,没有予以理睬。不久基坑发生了严重坍塌,并造成4名施工人员被掩埋,经抢救3人死亡、1人重伤。
事故发生后,专业分包单位立即向有关安全生产监督管理部门上报了事故情况。经事故调查组调查,造成坍塌事故原因,是由于地质勘察资料中未标明地下存在古河道,基坑支护设计中未能考虑这一因素而造成的。事故造成直接经济损失80万元,于是专业分包单位要求设计单位赔偿事故损失80万元。
[问题]

本起事故可定为哪种等级的事故请说明理由。