(4分)选择符合下列要求的物质,请将其化学式填入空格中。 ①易与血红蛋白结合使人

题型:填空题

问题:

(4分)选择符合下列要求的物质,请将其化学式填入空格中。

①易与血红蛋白结合使人中毒的氧化物          

②溶于水会产生大量热的一种极易溶于水的碱                ;

③实验室常用来作干燥剂的酸                

④一种由人体中最多的金属、地壳中含量最多的元素和空气中最多的气体的元素组成的盐   _            

考点:化学反应方程式的书写化学图标化学反应方程式的配平化学反应方程式的意义
题型:填空题

Some researchers are finding that daydreaming may be important to ______ mental health. Daydreaming, they say, is ______ good means of relaxation.

A.the; 不填

B.不填 ; the

C.不填; a

D.不填; 不填

题型:填空题

Paula and Rory have fives kids, three dogs, and a rabbit. When the house is very noisy, Megan, one of the children, is quietly inventing. A year ago, the 10-year-old had to design an anti-smoking poster, she came up with the idea of creating something that shows the average amount of tar(尼古丁) a smoker collects from just four packs of cigarettes.

“I like people to play with things more than read and write,” she says. So she researched her idea on the Internet, found a company in China that could make it, saved up her pocket money and got her idea made.

Paula says her daughter “think differently”: Ideas jump into her mind. After she got sunburnt on holiday, Megan invented a small plastic bracelet(手镯) that changes colors in the sun, telling you when to put on sunscreen(防晒霜). Several sunscreen companies have expressed an interest in the idea. She also came up with an idea to make a ball filled with water to stop the dog from feeling thirsty. “But we didn’t do anything with it,” says Paula.

Then she pulls out a picture of a special fishing rod(钓鱼竿) she had designed. “There is a camera on the hook(钩),” she explains, “and the screen is on the handle, and it shows if you’ve caught a fish or not.”

Megan doesn’t want to go to university. She keeps her pink-and -cream bedroom tidy. Paula is amazed and a bit confused by her daughter. “Everything has to be in a certain order,” Paula says. “Her brothers and sisters go with the flow, but with Megan, it’s ‘What time will that be happening?’ or ‘Where am I being picked up from today?’”

小题1:From Paragraph 2, we can infer that Megan             .

A.is not willing to go to school

B.likes to play with her brothers and sisters

C.prefers making something by herself

D.is good at reading and writing小题2:What did Megan invent after she got sunburnt on vacation?

A.The anti-smoking poster

B.The ball providing water for thirsty dogs

C.The fishing rod telling whether you’ve caught a fish

D.The bracelet telling when to put on sunscreen小题3: The underlined phrase “go with the flow” probably means “            .”

A.do what the most people usually do

B.follow the fashion closely

C.set an example to others

D.do something differently from others小题4:According to the passage, which of the following about Megan is true?

A.She has fives kids, three dogs, and a rabbit.

B.She designed an anti-smoking poster when she was nine.

C.She founded a company in China to get her idea made.

D.She invented a small plastic bracelet to change the color of sunscreen.小题5:The passage is mainly about             .

A.how Megan helps people give up smoking

B.a little girl’s dream to be a world-famous inventor

C.a 10-year-old inventor’s story

D.Megan’s relationship with her family members

题型:填空题

商品是指经过交换且未进入使用过程的()产品。

A.实用

B.劳动

C.天然

D.初级

题型:填空题

东方菜系是以中国烹饪为中心,膳食结构以()为主体。

A、植物原料

B、动物原料

C、动植物和占一半

D、都不对

题型:填空题

常见的误诊、漏诊的原因包括下面哪几种()

A.病史资料不完整、不确切

B.观察不细致或检验结果误差

C.先人为主、主观臆断

D.医学知识不足、缺乏临床经验

E.疾病的临床表现不同

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