哪些测量值与HSDPA速率下降相关（）A.Nack B.NoAnswer C.Ack

连续使用产生身体依赖性和成瘾性

A．三日极量
B．二日常用量
C．二日极量
D．三日常用量
E．七日常用量

阅读下面文言文，完成问题。

　　（沈约）孤贫，笃志好学，昼夜不释卷。母恐其以劳生疾，常遣减油灭火。而昼之所读，夜辄诵之，遂博通群籍，善属文。济阳蔡兴宗闻其才而善之，及为郢州，引为安西外兵参军，兼记室。兴宗常谓其诸子曰：“沈记室人伦师表，宜善师之”。

1、用“/”给下面句子划分朗读节奏。

母恐其以劳生疾

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2、解释文中划线词语。

①释（　　 ）　②遂（　　 ）　③属（　　 ）

3、翻译下列句子。

昼之所读，夜辄诵之。

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4、请根据选文概述沈约成才的自身原因。

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Recently, I flew to Las Vegas to attend a meeting. As we were about to arrive, the pilot announced with apology that there would be a slight (16) before setting down. High desert winds had (17) the airport to close all but one runway. He said that we would be (18) the city for a few minutes waiting to (19) . We were also told to remain in our seats meanwhile with our seat belts fastened (20) there might be a few bumps(颠簸). Well, that few minutes turned into about four-five minutes, including a ride that would make a roller coaster(过山车) (21) by comparison. The movement was so fierce that several passengers felt (22) and had to use airsickness bags. As you might guess, that’ s not a good thing to have happen in a(n) (23) space because it only (24) to increase the discomfort of the situation.

About twenty minutes into the adventure, the entire airplane became very (25) There was now a sense of anxiety and fear that could be (26) noticed. Every passenger simply held on for dear life …except one. A (27) was having a good time！ With each bump of the (28) , he would let out a giggle (咯咯地笑)of delight. As I observed this, I (29) that he didn’t know he was supposed to be afraid and worried about his (30) . He neither thought about the past nor about the future. Those are what we gown--ups have learned from (31) . He was (32) the ride because he had not yet been taught to fear it. Having understood this, I took a deep breath and (33) back into my seat, pretending I was (34) on a roller coaster. I smiled for the rest of the flight. I even (35) to giggle once or twice, much to the chagrin(随恼) of the man sitting next to me holding the airsickness bag.

20（）

A.mistake 

B.delay 

C.change 

D.wind

世界古典园林三大体系是哪三大体系？