固定资产采用历史成本记录是以会计分期假设为前提的。（）

阅读理解。

     The Earth is a planet and it goes around the Sun．Seven other planets also go around the Sun．None of them has an environment with air,so people and things cannot grow．The Sun and its planets are called the solar system．

The solar system is a small part of our galaxy．

     The stars we see at night are the suns in other solar systems．There are |

more than 200 billion stars in our galaxy,called the Milky Way,and our Sun is only one of them．

     But scientists have discovered many other galaxies in the universe．They are a long way away and their light has travelled for many years to reach us．It is hard to understand how large the universe is．

     Scientists have sent lots of spacecraft to look at other planets in our solar system,and some spacecraft have gong beyond the solar system．However,no one has discovered any life in space yet．

     But why has no one from other planets sent us a message?Have they tried

to send information to us?With so many stars in the universe,are we alone,or is there life out there in space?We don't know．．．yet．

根据学过的课文,判断正(T)误(F)

(     )1．The Sun is one of the Earth planets．

(     )2．There is more than one galaxy in our solar system．

(     )3．There are more than 200 billion stars in the Milky Way．

(     )4．Scientists have found life on other planets．

( )5．They've received no messages from space．

怎样区别单叶和复叶？

阅读下面这段文字，回答文后的1～3题。

　　只说林冲就床上放了包裹被卧，就坐下生些焰火起来。屋后有一堆柴炭，拿几块来，生在地炉里。仰面看那草屋时，四下里崩坏了，又被朔风吹撼，摇振得动。林冲道：“这屋如何过得一冬？待雪晴了，去城中唤个泥水匠来修理。”向了一回火，觉得身上寒冷，寻思却才老军所说，二里路外有那市井，何不去沽些酒来吃？便去包裹里取些碎银子，把花枪挑了酒葫芦，将火炭盖了，取毡笠子戴上，拿了钥匙，出来，把草厅门拽上；出到大门首，把西扇草场门反拽上锁了；带了钥匙，信步投东，雪地里踏着碎琼乱玉，迤逦背着北风而行。那雪正下得紧。

1．这一段里几次写到大风雪，请分析描写自然环境的作用。

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2．分析“那雪正下得紧”一句中“紧”字的妙用。

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3．对这段文字中的心理描写和细节描写，分析有误的一项是（     ）

A．林冲还想在草料场过一冬，表明林冲屡遭磨难，此时却并无反心，一心只想逆来顺受，以待出头之日。

B．林冲雪夜沽酒不忘带上花枪，说明他对 * * 人陷害已有防范。

C．盖火的细节暗示草料场失火并无林冲半点责任。

D．拽门、锁门、带钥匙的细节描写，说明林冲办事精细，小心谨慎。

物理实验中，对于一些不易直接测量的物理量，通常利用相关的物理效应间接比较其大小.

（1）图16所示是“探究物体动能的大小与什么因素有关”的实验，该实验中“物体动能的大小”是通过  ▲ 来反映的；

（2）图17所示是“比较不同燃料热值”的实验，该实验中“燃料燃烧放出热量的多少”是根据  ▲ 来比较的；

（3）图18所示是“研究电流做功多少与电压关系”的实验，该实验中“电流做功的多少”是根据  ▲ 来比较的.

干线子系统设计中，从建筑群配线架到楼层配线架间的距离不应超过（），从建筑物配线架到楼层配线架间的距离不应超过（）。