8.We should analyze the work instead of concentrating only on some single
parts.
A.as a whole B.on the whole
C.in general D.as a result
解析:句意:我们应该从整体来分析工作,而不是将注意力仅仅集中于某些孤立的部
分。as a whole整体上来看;on the whole总的来说;in general总体上,大体上,笼统
地;as a result结果。
答案:A
7. he does his work,I don't mind what time he arrives at the office.
A.So far as B.So long as
C.In case D.Meanwhile
解析:句意:只要他做了他的工作就行,我不在乎他什么时间来办公室。so long as只
要,符合题意。so far as远到,就……而言;in case以防万一;meanwhile与此同时。
答案:B
6.(2010·河南省实验中学高三检测)There are many things that I can't living in
big cities,one of which is the air pollution.
A.keep up with e up with
C.put up with D.catch up with
解析:put up with“容忍,忍受”,符合句意。keep up with跟上;come up with想
起;catch up with赶上,均不符合句意。
答案:C
5.She at her boss from behind her computer and didn't dare to say a word.
A.glanced B.glimpsed
C.glared D.stared
解析:句意:她从电脑后看了老板一眼,一句话也没敢说。glance at看一眼,瞥一
眼;glimpse at无意中瞥见;glare at怒目而视;stare at凝视,盯着看。
答案:A
4. exercise,he has built up his health.
A.In case of B.Because
C.As a result of D.In face of
解析:as a result of“由于……的结果”,符合句意及句子结构。because后需接句
子;in case of以防万一;in face of面临,不顾。
答案:C
3.(2010·江西南昌高三检测)I have no idea how it that the man met with trouble
again.
A.came about B.came out
C.came up D.came across
解析:How does/did it come about that...?意思是“……是怎样发生的?”句意:我
不知道那个人怎么又遇上麻烦了。
答案:A
2.The prices of houses in this area from¥300,000 to¥600,000 at present.
A.divide B.separate
C.range D.differ
解析:句意:目前这个地区的房价在¥30万至¥60万之间。divide分成;separate分
开;range在……范围内变动;differ不同。
答案:C
1.(2010·安徽合肥高三检测)As far as I see, is no possibility he will win the tennis match this time.
A.it;that B.there;that
C.it;whether D.there;whether
解析:there is no possibility that...是固定句型,其中that引导的是同位语从句。句
意:据我所知,这次他要赢得这场网球赛是不可能的。
答案:B
18.(16分)如图所示,在方向竖直向上的磁感应强度为B的匀强磁场中,有两条光滑的平行金属导轨,其电阻不计,间距为L,导轨平面与磁场方向垂直,ab、cd为两根垂直导轨放置的、电阻都为R、质量都为m的金属棒。棒cd用能承受最大拉力为f的水平细线拉住,棒ab在水平拉力F的作用下以加速度a静止开始向右做匀加速运动,求:
(1)F随时间t的变化规律;
(2)经多长时间细线将被拉断;
(3)从ab棒开始运动到cd棒刚要运动过程中,流过cd棒的电量。
17.(14分)如图所示,质量为M 的小车静放在水平光滑的平面上,在小车左端加一水平恒力F,当小车向右运动时间为t时,在小车前端轻轻地放上一个大小不计,质量为m 的小物块,物块与小车间的动摩擦因数为μ ,小车足够长。为保持小车匀速运动,水平恒力需调整为F1,取g = 10m/s2,求:
⑴从小物块放上小车开始,则水平推力F1所做的功为多少?
⑵系统产生的内能是多少?
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