道钉钉头脱落，严重锈蚀或下颚磨耗达（）及以上应有计划地更换。A、1mmB、2mmC、

Was it when he returned        he was caught in a snowstorm?

A．where

B．when

C．that

D．how

临床上使用的基托材料主要为热凝和自凝基托材料两类，其在组成、性能及应用上都不相同，自凝塑料与热凝塑料相比，其主要缺点是

A．分子量大

B．残留单体少

C．色泽稳定性好

D．易产生气泡

E．机械强度好

2008年浙江省全省水资源总量855.23亿立方米；人均水资源1687立方米。总用水量207.98亿立方米，同比下降0.11%，降幅比上年减少1.09个百分点，其中，生活用水量24.03亿立方米，同比增长2.6%，生产用水量171.18亿立方米，同比下降1%，城市环境用水量12.77亿立方米，同比增长7.3%。

与上年相比，2008年浙江省用水量增长最多的是：

A．生活用水
B．城市环境用水
C．农田灌溉用水
D．工业用水

阅读理解。

     On a rainy day, you will see many streams of muddy (多泥的) water running down the slopes (山坡) of

a hill. The water is muddy because it washes away soil from the hill slopes.

      Sometimes soil is blown away by strong winds. When the soil is carried away by water or wind, we say

that the land is eroded (侵蚀). This is known as soil erosion.

      Plants cannot grow on eroded land. There is not enough soil on eroded land to give them the things they

need. Plants need water and salts from the soil. 

      We can do a number of things to stop soil erosion. This is called soil conservation (保护).

      One way of soil conservation on flat, open ground is to grow small plants such as grasses. Their roots

hold the soil tightly together. Another way is to plant trees around an open field. Thus soil erosion by strong

winds cannot take place. Rows of trees act as a very big wall.

      Soil erosion on slopes can be stopped by cutting "steps" called terraces (梯田). Water carrying soil cannot

run straight down the slope now. It has to run down the terraces. This slows down the flow of the water.

Most of the soil in the water is left behind on the terraces.

      There are some other ways of soil conservation.

1. On a rainy day the water running down the slopes of a hill is muddy because _____. [ ]

A. there is no terrace on the slopes

B. there is no small plant on the slopes

C. it washes away soil from the slopes

D. there is too much soil on the slopes

2. Plants cannot grow on eroded land because _____. [ ]

A. there is a lot of sand

B. there is not enough water and salts

C. there is no water

D. the land is too hard

3. One way of soil conservation on flat, open ground is _____. [ ]

A. to grow small plants such as grasses

B. to plant trees around an open field

C. to add fertilizer to the soil

D. A and B

4. From the passage we learn that there are _____ ways to reserve soil.[ ]

A. only three

B. two

C. more than three

D. six

患者男，58岁，因“间歇性咳嗽、痰中带血1个月”来诊。吸烟1~2包/d×30年。查体：T36.5℃，P86次/min，R24次/min，BP120/82mmHg；锁骨上淋巴结无肿大；双肺呼吸音清，HR86次/min，律齐，各瓣膜区未闻及病理性杂音；双下肢轻度水肿。

该患者的肺癌临床分期和应选择的治疗方案是（提示颅脑MRI（增强）、上腹部CT（增强）和全身放射性核素扫描均未发现肿瘤转移。肺功能、心功能和超声心动图均正常。）（）

A.Ⅱb期

B.Ⅲa期

C.Ⅲb期

D.顺铂＋吉西他滨作为术前新辅助化学治疗2个周期

E.顺铂＋吉西他滨＋唑来膦酸一线化学治疗

F.顺铂＋阿霉素＋环磷酰胺一线化学治疗

G.顺铂＋阿霉素＋环磷酰胺＋同步放射治疗

H.顺铂＋依托泊苷一线治疗

I.EGFR-TKI治疗