问题 填空题

(1)亚运会是科技的盛会.

①广州亚运会使用了一种电能、太阳能混合动力电动车,用车顶的太阳能板把太阳能转化为电能.太阳能板中大量使用硅,该元素的种类属于______元素.

②下列应用中,主要使用有机合成材料的是(填序号,下同)______.

a.使用碳单质制作的赛艇  b.用风洞原理制作的铁质标枪  c.使用合成纤维制作的泳衣

(2)科学的饮食可以保证每一个与会者的健康.

①运动员能品尝到虾饺等具有岭南特色的茶点.制作虾饺的主料有虾仁、冬笋、猪肉、面粉等,其中提供能量的营养素有蛋白质、______、油脂.

②运动员需要多食用蔬菜、水果,补充各种维生素.缺乏维生素C会引起的疾病是(填序号)______.

a.坏血病     b.龋齿     c.夜盲症

③人体健康离不开钙元素.下列有关钙元素的叙述中,不正确的是______.

a.幼儿及青少年缺钙会得佝偻病和发育不良

b.成年人比幼儿和青少年需要摄入更多的钙

c.老年人缺钙会发生骨质疏松,容易骨折

d.人体中钙元素大部分存在于骨骼和牙齿中

(3)广州亚运会是绿色亚运,据报道广州亚运的垃圾100%实现了分类处理和回收.请举出一种可以回收的垃圾:______.

答案

(1)①硅元素的名称偏旁是石字旁,为固态非金属;

②合成有机高分子材料是用有机高分子化合物制成的材料,碳单质制作的赛艇,是无机非金属材料,铁质标枪属于金属材料,合成有机高分子材料主要包括塑料、合成纤维、合成橡胶,合成纤维制作的泳衣属于有机合成材料,故c正确;

(2)①虾仁中主要含有蛋白质,猪肉中主要含有蛋白质和油脂,面粉中主要含有糖类;②坏血病是由于缺乏维生素C造成的,龋齿是由于缺氟造成的,夜盲症是由于缺乏维生素A造成的;③幼儿和青少年正在长身体需要的钙多,所以b说法错误;

(3)可以回收的垃圾主要有废旧塑料、废弃金属等,如易拉罐、矿泉水瓶等.

故答案为:(1)①非金属;②c;(2)①糖类; ②a; ③b;(3)易拉罐(或矿泉水瓶等).

选择题
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     根据短文内容,从短文后的选项中选出能填入空白处的最佳选项,选项中有两项为多余选项。

    What is the hottest topic at your school recently? In Hangzhou Yongjin Middle School,it's money.

     The school held an activity called "making money" last weekend. About 200 Junior 1 and Junior2

students  were divided into 30 teams.    1  

     What did they choose to sell? Some sold newspapers; some chose bottled waste; some sold

shopping bags and bamboo baskets ……Hu Qing's team decided to sell some useful books in front of

the Children Activity Centre.   2   But unfortunately,they met urban management officers(城管).The

officers asked them to leave."We played hide-and-seek with them the whole morning," said Hu."Finally

we had to give up."Wang Bing and her team sold ice cream in a square. They didn't meet any officer.  3 

The team then put a board saying"For Country Kids".It worked. More people came to their stall. A

foreigner even gave them 100 yuan."He didn't want any change.   4  "said Wang."We are touched."Later

that day they gave 100 yuan and more to the Hope Project office.

     Meng Zhaoxiang and his team were luckier. They sold all their cakes in four hours and made 40.5

yuan." 5 "said Meng."Some people just looked. Others just tasted but didn't buy.Now I know how hard

it is for our parents to make the money we need to lead happy lives."

A. It was not easy to make the money.

B. But few people were interested in what they were selling.

C. It seemed that he was very rich.

D. They went out to make money by selling things.

E. He said he wanted to help the children.

F. They thought parents would like to buy the books for their children.

G. It was very fun to sell things in the streets.