京剧是西皮调和二簧腔流传到北京以后吸收融汇了山陕梆子和昆腔、京调（）等剧种的艺术营养

在“小白兔与狼外婆”的故事中小白兔能分辨出门外不是自己的外婆，主要是依据声音的[ ]

A、响度

B、音色

C、音调

D、频率

起云剂是一种合法的食品添加剂，黑心厂家用塑化剂替代，对人体健康带来危害。DEHP 是塑化剂中的一种，其化学式为C₂₄H₃₈O₄。下列关于塑化剂DEHP的说法不正确的是 [ ]

A．DEHP由碳、氢、氧三种元素组成         

B．DEHP中有4个氧原子 

C．DEHP中碳、氢原子个数比为24：38       

D．DEHP的相对分子质量为390

6-Day Trek (艰苦跋涉) in the Highland National Parks

Destinations: Saigon—Cat Tien National Park—Buon Ma Thuot—Lak Lake—YokDon National Park

Estimated trekking time: Average 4-5 hours／day

Summary: This trip is ideal for those who love trekking in natural forests. From the southern part of Vietnam up to the central highlands, you will cross through two national parks. There will be opportunities to see wildlife and challenge yourself physically at a moderate (中等的) level.

Indulge yourself in the beauty of nature, escape from the hustle and bustle of the city, rediscover yourself in the natural world and refresh both mind and body.

Highlights:

1) Private tour

2) Walk through the forest to a fascinating and beautiful wetland area. If you are lucky, you may be able to see many different kinds of animals using only binoculars (双筒望远镜).

3) Night time wildlife-spotting excursion (远足)

4) Elephant riding

Includes:

1) Travel insurance

2) Private transportation

3) English-speaking guide

4) Guest house-twin shared room

5) Meals as indicated in the itinerary

6) Elephants

7) Canoe

8) Mineral water

9) Entrance fees & all permits

Excludes:

1) Surcharges for other guides in other languages, festival season and peak season surcharges, which will be advised at time of booking

2) Visa

3) Gong show (80 USD／show)

4) Tips

5) Personal expenses

小题1:During the tour, visitors will trek through _______ national parks.

A．2

B．3

C．4

D．5小题2:In the forest, tourists will be able to _______.

A．ride elephants

B．have barbeques with natives

C．play with wild animals

D．race in canoes小题3:Visitors may have to pay extra fees for _______.

A．permits

B．a Gong show

C．meals and water

D．an English-speaking guide小题4:This advertisement is especially for visitors _______.

A．from other countries

B．who love wildlife

C．who enjoy country life

D．interested in hiking in forests

2011年第110届中国进出口商品交易会（广交会）开幕式暨中国加入世界贸易组织10周年论坛在广州隆重举行。来自商务部的数据显示，入世10年来，中国进口规模增长5.2倍，跃居全球第二大进口国。我国共遭受国外贸易救济调查692起，合计金额389.8亿美元。

入世十年给中国带来了什么？请你观察并思考以下问题：

（1）【成就篇】入世10年，中国取得了哪些成就？(列出两点即可。2分)

（2）【挑战篇】入世10年，我们遇到了哪些挑战？(列出两点即可。2分)

(3)【转变篇】 从“市场份额之争”到“核心技术之争”的转变。为了在核心技术之争中取胜利，请你为国家提几点建议。（列出三点即可。6分）

用户维护角色能够对系统中的普通用户进行（）具体维护操作。

A.增加

B.封存

C.修改

D.解锁

E.调动