阅读理解。 Short and shy, Ben Saunders was t

题型:阅读理解

问题:

阅读理解。

      Short and shy, Ben Saunders was the last kid in his class picked for any sports team. "Football, tennis

Cricket-anything with a round ball, I was useless, "he says now with a laugh. But back then he was the

object of jokes in school gym classes in England's rural Devonshire. 

     It was a mountain bike he received for his 15th birthday that changed him. At first the teen went biking

alone in a nearby forest. Then he began to cycle along with a runner friend. Gradually, Saunders set his mind

building up his body, increasing his speed, strength and endurance. At age 18, he ran his first marathon.

      The following year, he met John Ridgway, who became famous in the 1960s for rowing an open boat

across the Atlantic Ocean. Saunders was hired as an instructor at Ridgway's school of Adventure in Scotland,

where he learned about the older man's cold-water exploits (成就). Intrigued, Saunders read all he could about

Arctic explorers and North Pole expeditions, then decided that this would be his future.

     Journeys to the Pole aren't the usual holidays for British country boys, and many people dismissed his

dream as fantasy."John Ridgway was one of the few who didn't say, 'You are completely crazy,' Saunders

says.

     In 2001, after becoming a skilled skier, Saunders started his first long-distance expedition toward the North

Pole. He suffered frostbite, had a closer encounter (遭遇) with a polar bear and pushed his body to the limit.

     Saunders has since become the youngest person to ski alone to the North Pole, and he's skied more of the

Arctic by himself than any other Briton. His old playmates would not believe the transformation.

      This October, Saunders, 27, heads south to explore from the coast of Antarctica to the South Pole and back, an 1800-mile journey that has never been completed on skis.

1. The turning point in Saunders' life came when  _____.

A. he started to play ball games

B. he got a mountain bike at age 15

C. he ran his first marathon at age 18

D. he started to receive Ridgway's training

2. We can learn from the text that Ridgway _______.

A. dismissed Saunders' dream as fantasy

B. built up his body together with Saunders

C. hired Saunders for his cold-water experience

D. won his fame for his voyage across the Atlantic

3. What do we know about Saunders?

A. He once worked at a school in Scotland.

B. He followed Ridgway to explore the North Pole.

C. He was chosen for the school sports team as a kid.

D. He was the first Briton to ski alone to the North Pole.

4. The underlined word "Intrigued" in the third paragraph probably means _____.

A. Excited  

B. Convinced

C. Delighted

D. Fascinated

5. It can be inferred tat Saunders' journey to the North Pole ______.

A. was accompanied by his old playmates

B. set a record in the North Pole expedition

C. was supported by other Arctic explorers

D. made him well-known in the 1960s

考点:故事类阅读
题型:阅读理解

又称为分子胶囊的是()。

A.固体分散物 

B.微囊 

C.包合物 

D.微球 

E.脂质体

题型:阅读理解

科学研究表明:精神因素(焦虑、紧张等心理应激过程)会使T细胞活性下降,对病毒、真菌感染的抵抗能力和对肿瘤细胞的监控能力下降,还间接引起机体生成抗体的能力降低。下图表示神经、免疫、内分泌三大系统相互调节的部分示意图,请据图回答下列问题。

(1)由图可知,神经系统可通过突触前膜_______直接调节免疫器官或免疫细胞的活动,还可通过下丘脑分泌有关激素间接调节免疫器官或免疫细胞的活动。

(2)精神因素使T细胞活性下降,为什么会引起机体生成抗体的能力降低?

(3)维持机体稳态离小开细胞问的信息交流,动物细胞间进行信息交流的途径有:一是_____(填三种)等信息分子通过体液运输并作用于靶细胞来实现,二是通过细胞间的接触实现信息交流。吞噬细胞将抗原呈递给T细胞是通过哪种途径实现的?____________。

(4)若抗体与自身红细胞结合,造成这些红细胞被吞噬和分解,这在免疫学上称为_____;若抗体结合到呼吸道上皮细胞,再接受同一抗原刺激后引起哮喘,这在免疫学上称为_________。

题型:阅读理解

在反应X+2Y=R+2M中,当32gY与X恰好完全反应后,生成18gM,且生成的R和M的质量比为11:9,则在此反应中,参加反应的X与生成的R的质量比为

A.4:11

B.16:9

C.8:11

D.32:9

题型:阅读理解

碳酸氢根为体内碱储备,其增减可影响酸碱平衡。

题型:阅读理解

《索问·金匮真言论》五脏分阴阳,则肺属

A.阳中之阳
B.阴中之阴
C.阳中之阴
D.阴中之阴
E.阴中之至阴

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