问题 填空题

(4分)2011年4月1日~10月31日世界园艺博览会在中国西安举行。其理念为“绿色引领时尚”,回归自然、不事雕饰、绿色生活成为追求的时尚。自然馆(右图所示)是2011西安世园会的植物温室,主要展示地球上不同地域、不同气候带的珍稀植物及生态景观。建筑半埋地下,立面材料选用玻璃、木材与少量钢筋混凝土结合,倚山而建,层层叠叠,与地形完美结合,保证在建筑室内可以从不同标高领略湖面和对面花园的美景。请回答下列问题:

(1)木材属于         (填“天然材料”、“人造材料”中之一)。

(2)玻璃的主要成分之一是硅酸钠(Na2SiO3),在硅酸钠中硅元素的化合价为_____价。

(3)钢筋容易锈蚀,请写出一种防止铁生锈的方法:                              

(4)下列做法中,符合绿色化学理念的是           (填序号)。

①猪饲料中掺入瘦肉精以获得更多的瘦肉

②自2011年5月1日起,禁止在面粉中添加增白剂

③为了可持续发展,将地沟油回收再利用

答案

(1)天然材料(2)+4(3)刷漆、涂油等(合理答案均可)(4)②

(1)木材属于天然材料.

(2)钠元素显+1价,氧元素显-2价,设硅元素的化合价是x,根据在化合物中正负化合价代数和为零,可得:(+1)×2+x+(-2)×3=0,则x=+4价.

(3)防止钢铁生锈的原理是使铁与氧气、水隔绝,因此防锈可以采取:使铁制品保持干燥;在铁制品表面刷漆、涂油;使铁制品表面形成致密的氧化膜等.

(4)①人食用含有瘦肉精的瘦肉,食用后人会出现肌肉振颤、头疼、恶心、呕吐等症状,特别是对高血压、心脏病、甲亢和前列腺肥大等疾病患者危害更大,严重的可导致死亡;故选项不符合绿色化学理念.

②增白剂一旦进入人体,就可能对人体造成伤害,如果剂量达到一定程度还可能使人体内的细胞发生变异,成为潜在的致癌隐患;禁止在面粉中添加增白剂,符合绿色化学理念.

③地沟油,泛指在生活中存在的各类劣质油;由于地沟油中含有杂质及有毒物质,将地沟油回收再利用,不符合绿色化学理念.

阅读理解

阅读理解。

     Macao is only forty miles away from Hong Kong and it is easy to reach. It is an interesting place and it

  has a long history.  Macao is a part of China, and it was returned to China in 1999, and most people

 living there are Chinese.

     The first Europeans to reach Macao came from Portugal. More than four hundred years ago, the

 Portuguese went there to do business with Chinese. Some settled and made their homes there. They built

  strong forts to guard their city on the island. They also built churches, schools, hospitals and other places.

 Slowly the city grew. People from many countries came to live and work in Macao.

     Today, many people visit Macao. Some only go there to watch dog-racing or motor racing or to

 gamble. But Macao is a quiet and peaceful place. It is pleasant just to walk around and look at the old

 buildings and forts. You feel you are back in the old days. Of course, some of the buildings are now in

 ruins. The church of St. Paul has only the front wall with steps leading up to it. But it is still interesting to

 see.

     When you are hot and tired, there are small cool gardens to rest in. When you are hungry, there are

  good restaurants with many kinds of food.  Nearby are islands, which are also nice to visit and are easy

  to get to. There is certainly much to see and to do in Macao.

1. From the passage we know _____.

    A. Macao is an island far away from Hong Kong

    B. now Macao is a good place for people to spend their holidays

    C.in Macao the largest number of people is the Portuguese

    D. Macao was once ruled by foreigners from many countries

2. The underlined phrase "in ruins" in the passage means "_____".

    A. 成为废墟    

    B. 成为堡垒

    C. 成为赌场    

    D. 成为教堂

3. Who was the first settler on the island of Macao?

    A. British people.           

    B. Portuguese.

    C. Europeans.              

    D. Chinese,

4. What do visitors come to Macao for?

    A. Watching the dog-racing.    

    B. Gambling.

    C. Sightseeing.                

    D. A, B and C

5. Which of the following is not TRUE?

    A. Macao is a part of Hong Kong

    B. The Portuguese built forts in order to protect the family years ago.

    C. Macao is a good place to visit.

    D. It's not difficult to go to visit the islands near Macao.

单项选择题