采取下列哪项措施,能提高一个生态系统的抵抗力稳定性() A.减少捕食者和寄生者的数量

题型:单项选择题

问题:

采取下列哪项措施,能提高一个生态系统的抵抗力稳定性()

A.减少捕食者和寄生者的数量

B.使生产者和消费者的数量保持一样

C.增加适宜的物种种类

D.限制某一个演替过程

考点:高中生物生态系统的结构和功能生态系统的结构和功能题库
题型:单项选择题

请根据所提供的资料,按照报关单填制规范的要求,在报关单相对应的栏目选项中,选出最合适的答案。

资料1:报关单

中华人民共和国海关进口货物报关单

请根据以上资料,选择下列栏目正确选项:

“保费”栏应填()。

A.304/2 050/3

B.304/1 346/1

C.1 346/3

D.不填

题型:单项选择题

Read and judge. 根据短文内容判断下面的句子是否正确,正确的写“T”,错误的写“F”。 

        My name is Peter. I am a boy. I'm tall. I'm from America. I get up at 6:30. I like football and swimming

(游泳). I don't like playing ping-pong. I play football in the morning. I go swimming in the afternoon. I like fish 

and  rice. But I don't like meat. My mother and father like bananas, but I don't like bananas. Orange is my 

favourite fruit.

( ) 1. Peter is a short boy.

(     ) 2. Peter goes swimming in the morning.

(     ) 3. Peter likes football.   

(     ) 4. Peter likes oranges. 

(     ) 5. His mother and father like apples.

题型:单项选择题

下列有关肌钙蛋白应用评价的说法不正确的是()

A.cTn用于诊断近期发生再梗死效果最好

B.cTn检测特异性高于CK

C.cTn可用于判断再灌注是否成功

D.cTn敏感度高于CK

E.窗口期较CK长,有利于诊断迟到的急性心肌梗死和不稳定性心绞痛

题型:单项选择题

I had just gone to bed after a very hard day when the phone rang. It was a strange farmer. I had never met him before although I had often heard people talk about him. He sounded quite nervous and he had been talking for a minute or so before I understood anything. Even then all I could make out was that someone called Milly had had a very bad accident. I really didn’t know who she was but I had to go.

It had been snowing heavily that day and I didn’t know the way. I had been driving for at least an hour when I finally found his place. He was standing there, waiting for me. It seemed that Milly had died. “She meant more to me than anyone even my own wife!” he said. I could see that he had been crying. I thought something terrible had taken place, a possible scandal(丑闻). I was even more surprised when he told me he had put her in the barn(厩). “I couldn’t leave her in the cold!” he said. Milly had clearly been a secret lover of his. I was about to tell him he could not expect me to cover anything up when he opened the barn door. He lifted his candle and I saw a dark figure on the ground.

“She was such a good cow! I wouldn’t let anyone except a doctor touch her!” he said and cried again.

60. The farmer wished that the writer might         .

A. look into the matter             B. bring Milly back to life

C. free him from a scandal          D. keep the whole thing a secret

61. The underlined phrase in the first paragraph means “       ”.

A. expect                               B. understand

C. see clearly                            D. hear clearly

62. Before he arrived at the farmer’s house, the writer expected to see Milly lying         .

A. on the ground of a barn          B. on the floor of a room

C. in bed in a room                D. in bed in a barn

63. What do we know about Milly for the story?

A. She had met with an accident.         B. She had caused a scandal.

C. She was seriously ill.            D. She was hidden somewhere.

64. The person who told the story is probably a        .

A. farmer                        B. policeman

C. country doctor                D. newspaper re5-6porter

题型:单项选择题

船上所装的舷灯,在朝前的方向上,应显示最低要求的发光强度,发光强度在规定光弧外的3°至5°之间,应减弱以达到切实断光。1°至3°()

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