软件测试是保证软件质量的重要措施，它的实施应该是在( )。A．程序编码阶段 B．软

阅读理解。

     Thirteen vehicles lined up last March to race across the Mojave Desert, seeking a million in prize money.

To win, they had to finish the 142-mile race in less than 10 hours. Teams and watchers knew there might be

no winner at all, because these vehicles were missing a key part drivers.

     DARPA, the Defense Advanced Research Projects Agency, organized the race as part of a push to develop

robotic vehicles for future battlefields. But the Grand Challenge, as it was called, just proved how difficult it is

to get a car to speed across an unfamiliar desert without human guidance. One had its brake lock up in the

starting area. Another began by throwing itself onto a wall. Another got tied up by bushes near the road after

1.9 miles.

     One turned upside down. One took off in entirely the wrong direction and had to be disabled by remote

(远距离的) control. One went a little more than a mile and rushed into a fence ; another managed to go for six

miles but stuck on a rock. The "winner," if there was any, reached 7.8 miles before it ran into a long, narrow

hole, and the front wheels caught on fire.

     "You get a lot of respect for natural abilities of the living things," says Reinhold Behringer, who helped

design two of the car-size vehicles for a company called Sci-Autonics. "Even ants (蚂蚁) can do all these tasks

effortlessly. It's very hard for us to put these abilities into our machines."

     The robotic vehicles, though with necessary modern equipment such as advanced computers and GPS

guidance, had trouble figuring out fast enough the blocks ahead that a two-year-old human recognizes

immediately, Sure, that very young child, who has just only learned to walk, may not think to wipe apple juice

off her face, but she already knows that when there's a cookie in the kitchen she has to climb up the table, and

that when she gets to the cookie it will taste good. She is more advanced, even months old, than any machine

humans have designed.

1. Watchers doubted if any of the vehicles could finish the race because _____.

A. they did not have any human guidance

B. the road was not familiar to the drivers

C. the distance was too long for the vehicles

D. the prize money was unattractive to the drivers

2. DARPA organized the race in order to _____.

A. raise money for producing more robotic vehicles

B. push the development of vehicle industry

C. train more people to drive in the desert

D. improve the vehicles for future wars

3. From the passage we know "robotic vehicles" are a kind of machines that _____.

A. can do effortlessly whatever tasks living thing can

B. can take part in a race across 142 miles with a time limit

C. can show off their ability to turn themselves upside down

D. can move from place to place without being driven by human beings

4. In the race, the greatest distance one robotic vehicle covered was _____.

A. about eight miles

B. six miles

C. almost two miles

D. about one mile

5. In the last paragraph, the writer implies that there is a long way to go _____.

A. for a robotic vehicle to finish a 142-mile race without any difficulties

B. for a little child who has just learned to walk to reach the cookie on the table

C. for a robotic vehicle to deal with a simple problem that a little child can solve

D. for a little child to understand the importance of wiping apple juice off its face

患者男，36岁，三个月前因外伤一上前牙脱落，今要求烤瓷修复。口腔检查：左上l缺失，间隙正常，牙槽嵴无明显吸收。右上1牙冠1/2缺损，已露髓，探稍敏感，叩诊阴性，无松动。左上2牙冠良好，叩诊阴性，无松动。上下前牙牙龈轻度红肿，易出血，可见菌斑及牙石。余牙未见异常。

下列哪项对桩核中桩的描述是正确的

A．桩末端距根尖孔3～5mm

B．桩末端距根尖孔1～62mm

C．桩可增强根管封闭

D．桩直径一般为根横径的1/2

E．桩的固位力主要取决于粘固力

下列哪项不属于甲状腺异常图像（）。

A.胸骨后甲状腺

B.甲状腺弥漫性肿大

C.甲状腺峡部缺如

D.甲状腺形态不完整、边缘不光滑

E.舌骨下甲状腺

硫元素的化合物在生产、生活中有着广泛的应用。

（1）400℃，1.01× Pa下，容积为1．0L的密闭容器中充入0.5molSO₂，(g)和0.3 molO₂ (g)，发生反应中n(SO₃)和n(O₂)随时间变化的关系如图所示。反应的平衡常数K=_______；0到10 min内用SO₂：表示的平均反应速率_________。更具图中信息，判断下列叙述中正确的是_____（填序号）。

A．a点时刻的正反应速率比b点时刻的大

B．c点时刻反应达到平衡状态

C．d点和e点时刻的c(O₂)相同

D．若5 00℃，1.01×Pa下，反应达到平衡时，n( SO₃)比图中e点时刻的值大（2）用NaOH溶液吸收工业废气中的SO₂，当吸收液失去吸收能力时，25℃时测得溶液的pH=5.6，溶液中Na^＋,H^＋, HSO- 3,SO2- 3离子的浓度由大到小的顺序是__________________

（3）可通过电解法使（2）中的吸收液再生而循环利用（电极均为石墨电极），其工作示意图如下：

HSO- 3在阳极室反应的电极反应式为_______________________________.

阴极室的产物_________________。

以下关于暂估价，表述不正确的是（）。

A.材料单价参考市场价格确定

B.暂估价在施工中可能发生也可能不发生

C.不属于依法招标的，应由承包人按合同约定提供

D.专业工程暂估价应分不同专业，按有关计价规定估算