在密闭容器内进行下列反应：X2(g)+Y2(g)2Z(g)。已知X2、Y2、Z的

患者，男，70岁，患冠心病20年，近1年活动后易发生心悸、气短，医生诊断为心功能Ⅱ级，责任护士指导患者正确的活动和休息原则是（）

A.可不限制活动，增加午休时间

B.可起床轻微活动，需增加活动间歇时间

C.以卧床休息、限制活动量为宜

D.以卧床休息为主，间断起床活动

E.需严格卧床休息、半卧位或坐位

根据括号中所给的汉语或释义写出单词的正确形式，使句子的意思完整正确。

小题1:Computers are more ________________(广泛地)used in our daily life.

小题2:Peace and ________________(发展) are two themes in today’s world.

小题3:I ____________(连接) the new printer to my computer and it worked well.

小题4:School Carnival, a new __________(文化的) festival, is held every December in our school.

小题5:Jim didn’t ______________(get to know and understand something) he was wrong until then.

钢的成分中，有害元素是（）和P。

Adult butterflies use their senses of sight, touch, hearing, smell, and taste to survive in the world, find food and mates, lay eggs in an appropriate place, migrate, and avoid hungry predators.

Sight

Butterflies have large, compound (multifaceted) eyes, which allow them to see in all directions without turning their heads. Like most insects, butterflies are very nearsighted, so they are more attracted to a large stand of flowers rather than individual plants. Butterflies do not "see" colors such as red, green, and yellow, but sense polarized（偏振的） light, which indicates the direction the sun is shining, as well as ultraviolet light, which is present on many flowers and guides butterflies to nectar （花蜜）sources.

Smell

Butterflies have a very well-developed sense of smell, but it's not in their nose (since they don't have one). Sense receptors located in their antennae, feet, and many other parts of the body help butterflies find food (usually flower nectar), and mates (the female smells the male's pheromones).

Taste

Butterfly's feet have sense organs that can taste the sugar in nectar, letting the butterfly know if something is good to eat or not. Some females also taste host plants in order to find appropriate places to lay their eggs. Adult butterflies and moths feed using a proboscis, a long, coiled tube. Butterflies force blood into the tube to straighten it out, allowing them to feed. Butterflies get all their food from this tube.

Hearing

Butterflies don't have ears. Instead they "hear" sounds through their wings by sensing changes in sound vibrations.

Butterflies may possess senses we don't even know about yet because their anatomy is very different than ours, and therefore difficult to understand when perceived through our own human senses.

小题1:From the passage we can know that butterflies can see_____

A．thing behind them

B．thing in the distance

C．most bright colors

D．flower nectar from a distance小题2: Butterflies can easily find food resources by using their______.

A．sense organs of sight and smell

B．sense organs of sight and taste

C．sense organs of smell and hearing

D．sense organs of smell and taste小题3: How do butterflies feed themselves?

A．by using their feet

B．by using a tube.

C．by using sense receptors

D．by using their wings.小题4:What is the passage mainly about?

A．The food sources of butterflies.

B．The habits of butterflies.

C．The unusual body of butterflies.

D．the sense of butterflies.

农村土地利用现状调查中，图斑调查的内容不包括( )。

A．图斑划分
B．图斑地类认定
C．确定属性
D．零星地物调查